./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_label40+token_ring.02.cil-1.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_label40+token_ring.02.cil-1.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 bd23dfa6335616d8eec5b9783c1f6df5ab0e74e3c379835195329e627de34889 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 02:09:53,269 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 02:09:53,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 02:09:53,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 02:09:53,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 02:09:53,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 02:09:53,392 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 02:09:53,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 02:09:53,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 02:09:53,395 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 02:09:53,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 02:09:53,396 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 02:09:53,397 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 02:09:53,397 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 02:09:53,397 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 02:09:53,398 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 02:09:53,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 02:09:53,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 02:09:53,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 02:09:53,403 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 02:09:53,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 02:09:53,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 02:09:53,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 02:09:53,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 02:09:53,404 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 02:09:53,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 02:09:53,405 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 02:09:53,405 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 02:09:53,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 02:09:53,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 02:09:53,406 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 02:09:53,406 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 02:09:53,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:09:53,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 02:09:53,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 02:09:53,407 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 02:09:53,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 02:09:53,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 02:09:53,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 02:09:53,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 02:09:53,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 02:09:53,410 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 02:09:53,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd23dfa6335616d8eec5b9783c1f6df5ab0e74e3c379835195329e627de34889 [2024-10-24 02:09:53,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 02:09:53,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 02:09:53,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 02:09:53,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 02:09:53,708 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 02:09:53,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.02.cil-1.c [2024-10-24 02:09:55,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 02:09:55,812 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 02:09:55,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.02.cil-1.c [2024-10-24 02:09:55,859 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f83004121/1bc114c71d0442159be2b5a4ce2baebd/FLAGbebf2bdff [2024-10-24 02:09:55,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f83004121/1bc114c71d0442159be2b5a4ce2baebd [2024-10-24 02:09:55,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 02:09:55,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 02:09:55,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 02:09:55,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 02:09:55,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 02:09:55,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:55" (1/1) ... [2024-10-24 02:09:55,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b74be09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:55, skipping insertion in model container [2024-10-24 02:09:55,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:55" (1/1) ... [2024-10-24 02:09:56,036 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 02:09:57,624 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_label40+token_ring.02.cil-1.c[377069,377082] [2024-10-24 02:09:57,653 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_label40+token_ring.02.cil-1.c[383339,383352] [2024-10-24 02:09:57,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:09:57,786 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 02:09:58,672 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_label40+token_ring.02.cil-1.c[377069,377082] [2024-10-24 02:09:58,684 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_label40+token_ring.02.cil-1.c[383339,383352] [2024-10-24 02:09:58,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 02:09:58,766 INFO L204 MainTranslator]: Completed translation [2024-10-24 02:09:58,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58 WrapperNode [2024-10-24 02:09:58,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 02:09:58,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 02:09:58,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 02:09:58,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 02:09:58,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:58,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,318 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-10-24 02:09:59,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 02:09:59,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 02:09:59,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 02:09:59,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 02:09:59,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,381 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,485 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 02:09:59,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,836 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 02:09:59,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 02:09:59,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 02:09:59,889 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 02:09:59,890 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (1/1) ... [2024-10-24 02:09:59,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 02:09:59,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:09:59,921 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 02:09:59,924 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 02:09:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 02:09:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-10-24 02:09:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-10-24 02:09:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-10-24 02:09:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-10-24 02:09:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-10-24 02:09:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-10-24 02:09:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-10-24 02:09:59,976 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-10-24 02:09:59,978 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-10-24 02:09:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-10-24 02:09:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 02:09:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-10-24 02:09:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-10-24 02:09:59,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 02:09:59,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 02:10:00,074 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 02:10:00,076 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 02:10:07,439 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-10-24 02:10:07,440 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 02:10:07,572 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 02:10:07,572 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-24 02:10:07,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:10:07 BoogieIcfgContainer [2024-10-24 02:10:07,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 02:10:07,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 02:10:07,577 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 02:10:07,580 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 02:10:07,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:09:55" (1/3) ... [2024-10-24 02:10:07,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429be9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:10:07, skipping insertion in model container [2024-10-24 02:10:07,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:58" (2/3) ... [2024-10-24 02:10:07,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@429be9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:10:07, skipping insertion in model container [2024-10-24 02:10:07,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:10:07" (3/3) ... [2024-10-24 02:10:07,585 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.02.cil-1.c [2024-10-24 02:10:07,599 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 02:10:07,599 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-24 02:10:07,722 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 02:10:07,730 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;@5cc28680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 02:10:07,731 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-24 02:10:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-24 02:10:07,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:07,759 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:07,760 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] [2024-10-24 02:10:07,761 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:07,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:07,767 INFO L85 PathProgramCache]: Analyzing trace with hash -584044612, now seen corresponding path program 1 times [2024-10-24 02:10:07,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:07,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407025331] [2024-10-24 02:10:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,293 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:08,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:08,333 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 02:10:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407025331] [2024-10-24 02:10:08,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407025331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:08,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:08,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:10:08,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081521924] [2024-10-24 02:10:08,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:08,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:10:08,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:10:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:10:08,378 INFO L87 Difference]: Start difference. First operand has 2241 states, 2216 states have (on average 1.8858303249097472) internal successors, (4179), 2219 states have internal predecessors, (4179), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 02:10:09,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:09,477 INFO L93 Difference]: Finished difference Result 4643 states and 8686 transitions. [2024-10-24 02:10:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:10:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:09,507 INFO L225 Difference]: With dead ends: 4643 [2024-10-24 02:10:09,508 INFO L226 Difference]: Without dead ends: 2404 [2024-10-24 02:10:09,521 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 02:10:09,524 INFO L432 NwaCegarLoop]: 4057 mSDtfsCounter, 4350 mSDsluCounter, 12142 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16199 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:09,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16199 Invalid, 691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:10:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2024-10-24 02:10:09,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2345. [2024-10-24 02:10:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2303 states have (on average 1.84020842379505) internal successors, (4238), 2306 states have internal predecessors, (4238), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-10-24 02:10:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 4295 transitions. [2024-10-24 02:10:09,683 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 4295 transitions. Word has length 61 [2024-10-24 02:10:09,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:09,684 INFO L471 AbstractCegarLoop]: Abstraction has 2345 states and 4295 transitions. [2024-10-24 02:10:09,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 02:10:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 4295 transitions. [2024-10-24 02:10:09,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:09,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:09,688 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] [2024-10-24 02:10:09,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 02:10:09,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:09,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1424404092, now seen corresponding path program 1 times [2024-10-24 02:10:09,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:09,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471593372] [2024-10-24 02:10:09,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:09,907 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 02:10:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471593372] [2024-10-24 02:10:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471593372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:09,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:10:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196608762] [2024-10-24 02:10:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:09,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:10:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:09,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:10:09,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:09,916 INFO L87 Difference]: Start difference. First operand 2345 states and 4295 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:10,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:10,981 INFO L93 Difference]: Finished difference Result 2757 states and 4924 transitions. [2024-10-24 02:10:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:10:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:11,004 INFO L225 Difference]: With dead ends: 2757 [2024-10-24 02:10:11,005 INFO L226 Difference]: Without dead ends: 2541 [2024-10-24 02:10:11,007 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 02:10:11,010 INFO L432 NwaCegarLoop]: 4121 mSDtfsCounter, 4342 mSDsluCounter, 16314 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 20435 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:11,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 20435 Invalid, 1048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 02:10:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2541 states. [2024-10-24 02:10:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2541 to 2446. [2024-10-24 02:10:11,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2446 states, 2386 states have (on average 1.8281642917015926) internal successors, (4362), 2390 states have internal predecessors, (4362), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-10-24 02:10:11,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 4443 transitions. [2024-10-24 02:10:11,187 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 4443 transitions. Word has length 61 [2024-10-24 02:10:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:11,187 INFO L471 AbstractCegarLoop]: Abstraction has 2446 states and 4443 transitions. [2024-10-24 02:10:11,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 4443 transitions. [2024-10-24 02:10:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:11,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:11,197 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] [2024-10-24 02:10:11,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 02:10:11,197 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:11,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1408885374, now seen corresponding path program 1 times [2024-10-24 02:10:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:11,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967698878] [2024-10-24 02:10:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:11,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:11,330 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 02:10:11,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:11,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967698878] [2024-10-24 02:10:11,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967698878] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:11,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:11,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:10:11,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939362977] [2024-10-24 02:10:11,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:11,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:10:11,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:10:11,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:11,333 INFO L87 Difference]: Start difference. First operand 2446 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:12,181 INFO L93 Difference]: Finished difference Result 3115 states and 5460 transitions. [2024-10-24 02:10:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 02:10:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:12,196 INFO L225 Difference]: With dead ends: 3115 [2024-10-24 02:10:12,197 INFO L226 Difference]: Without dead ends: 2798 [2024-10-24 02:10:12,200 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 02:10:12,202 INFO L432 NwaCegarLoop]: 4062 mSDtfsCounter, 4378 mSDsluCounter, 16167 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 20229 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:12,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 20229 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:10:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2024-10-24 02:10:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2649. [2024-10-24 02:10:12,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2649 states, 2553 states have (on average 1.8061104582843712) internal successors, (4611), 2559 states have internal predecessors, (4611), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2024-10-24 02:10:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2649 states to 2649 states and 4744 transitions. [2024-10-24 02:10:12,290 INFO L78 Accepts]: Start accepts. Automaton has 2649 states and 4744 transitions. Word has length 61 [2024-10-24 02:10:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:12,291 INFO L471 AbstractCegarLoop]: Abstraction has 2649 states and 4744 transitions. [2024-10-24 02:10:12,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2649 states and 4744 transitions. [2024-10-24 02:10:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:12,293 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:12,293 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] [2024-10-24 02:10:12,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 02:10:12,294 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:12,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:12,294 INFO L85 PathProgramCache]: Analyzing trace with hash -946919876, now seen corresponding path program 1 times [2024-10-24 02:10:12,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:12,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651148375] [2024-10-24 02:10:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:12,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:12,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:12,435 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 02:10:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651148375] [2024-10-24 02:10:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651148375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:10:12,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237843538] [2024-10-24 02:10:12,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:12,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:10:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:12,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:10:12,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:12,439 INFO L87 Difference]: Start difference. First operand 2649 states and 4744 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:13,502 INFO L93 Difference]: Finished difference Result 3887 states and 6619 transitions. [2024-10-24 02:10:13,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:10:13,502 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:13,517 INFO L225 Difference]: With dead ends: 3887 [2024-10-24 02:10:13,518 INFO L226 Difference]: Without dead ends: 3367 [2024-10-24 02:10:13,520 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 02:10:13,521 INFO L432 NwaCegarLoop]: 4116 mSDtfsCounter, 4350 mSDsluCounter, 16306 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 20422 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:13,521 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 20422 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:10:13,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-10-24 02:10:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3033. [2024-10-24 02:10:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3033 states, 2869 states have (on average 1.7716974555594285) internal successors, (5083), 2879 states have internal predecessors, (5083), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2024-10-24 02:10:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3033 states to 3033 states and 5318 transitions. [2024-10-24 02:10:13,644 INFO L78 Accepts]: Start accepts. Automaton has 3033 states and 5318 transitions. Word has length 61 [2024-10-24 02:10:13,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:13,644 INFO L471 AbstractCegarLoop]: Abstraction has 3033 states and 5318 transitions. [2024-10-24 02:10:13,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:13,645 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 5318 transitions. [2024-10-24 02:10:13,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:13,649 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:13,649 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] [2024-10-24 02:10:13,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 02:10:13,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:13,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 981352826, now seen corresponding path program 1 times [2024-10-24 02:10:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:13,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102595046] [2024-10-24 02:10:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:13,802 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 02:10:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:13,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102595046] [2024-10-24 02:10:13,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102595046] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:13,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 02:10:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081565571] [2024-10-24 02:10:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:13,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 02:10:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:13,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 02:10:13,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:13,805 INFO L87 Difference]: Start difference. First operand 3033 states and 5318 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:14,906 INFO L93 Difference]: Finished difference Result 5185 states and 8559 transitions. [2024-10-24 02:10:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 02:10:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:14,929 INFO L225 Difference]: With dead ends: 5185 [2024-10-24 02:10:14,929 INFO L226 Difference]: Without dead ends: 4281 [2024-10-24 02:10:14,933 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 02:10:14,934 INFO L432 NwaCegarLoop]: 4117 mSDtfsCounter, 4350 mSDsluCounter, 16309 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4362 SdHoareTripleChecker+Valid, 20426 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:14,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4362 Valid, 20426 Invalid, 999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 02:10:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2024-10-24 02:10:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 3818. [2024-10-24 02:10:15,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3522 states have (on average 1.7208972174900625) internal successors, (6061), 3540 states have internal predecessors, (6061), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2024-10-24 02:10:15,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 6510 transitions. [2024-10-24 02:10:15,085 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 6510 transitions. Word has length 61 [2024-10-24 02:10:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:15,086 INFO L471 AbstractCegarLoop]: Abstraction has 3818 states and 6510 transitions. [2024-10-24 02:10:15,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 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 02:10:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 6510 transitions. [2024-10-24 02:10:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-24 02:10:15,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:15,089 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] [2024-10-24 02:10:15,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 02:10:15,089 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:15,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1874839164, now seen corresponding path program 1 times [2024-10-24 02:10:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:15,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119865323] [2024-10-24 02:10:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:15,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:15,169 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 02:10:15,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:15,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119865323] [2024-10-24 02:10:15,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119865323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:15,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 02:10:15,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 02:10:15,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172066671] [2024-10-24 02:10:15,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:15,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 02:10:15,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 02:10:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 02:10:15,171 INFO L87 Difference]: Start difference. First operand 3818 states and 6510 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 02:10:16,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:16,107 INFO L93 Difference]: Finished difference Result 6913 states and 11211 transitions. [2024-10-24 02:10:16,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 02:10:16,108 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 61 [2024-10-24 02:10:16,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:16,133 INFO L225 Difference]: With dead ends: 6913 [2024-10-24 02:10:16,133 INFO L226 Difference]: Without dead ends: 5225 [2024-10-24 02:10:16,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-24 02:10:16,143 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4472 mSDsluCounter, 12167 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 16309 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:16,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4497 Valid, 16309 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 02:10:16,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5225 states. [2024-10-24 02:10:16,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5225 to 4690. [2024-10-24 02:10:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4236 states have (on average 1.674929178470255) internal successors, (7095), 4271 states have internal predecessors, (7095), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2024-10-24 02:10:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 7764 transitions. [2024-10-24 02:10:16,336 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 7764 transitions. Word has length 61 [2024-10-24 02:10:16,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:16,337 INFO L471 AbstractCegarLoop]: Abstraction has 4690 states and 7764 transitions. [2024-10-24 02:10:16,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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 02:10:16,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 7764 transitions. [2024-10-24 02:10:16,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:10:16,343 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:16,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:16,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 02:10:16,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:16,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2042674346, now seen corresponding path program 1 times [2024-10-24 02:10:16,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:16,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683993556] [2024-10-24 02:10:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:16,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 02:10:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:10:16,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:16,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683993556] [2024-10-24 02:10:16,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683993556] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042995779] [2024-10-24 02:10:16,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:16,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:16,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:16,465 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 02:10:16,466 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 02:10:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:16,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:16,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:16,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 02:10:16,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042995779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:16,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:10:16,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755666092] [2024-10-24 02:10:16,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:16,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:16,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:16,717 INFO L87 Difference]: Start difference. First operand 4690 states and 7764 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 02:10:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:17,016 INFO L93 Difference]: Finished difference Result 9693 states and 15244 transitions. [2024-10-24 02:10:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 99 [2024-10-24 02:10:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:17,064 INFO L225 Difference]: With dead ends: 9693 [2024-10-24 02:10:17,065 INFO L226 Difference]: Without dead ends: 7133 [2024-10-24 02:10:17,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 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 02:10:17,079 INFO L432 NwaCegarLoop]: 4114 mSDtfsCounter, 4092 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:17,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4254 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7133 states. [2024-10-24 02:10:17,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7133 to 7105. [2024-10-24 02:10:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 6237 states have (on average 1.6091069424402757) internal successors, (10036), 6305 states have internal predecessors, (10036), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2024-10-24 02:10:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 11291 transitions. [2024-10-24 02:10:17,440 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 11291 transitions. Word has length 99 [2024-10-24 02:10:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:17,440 INFO L471 AbstractCegarLoop]: Abstraction has 7105 states and 11291 transitions. [2024-10-24 02:10:17,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 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 02:10:17,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 11291 transitions. [2024-10-24 02:10:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-24 02:10:17,449 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:17,450 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:17,467 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 02:10:17,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:17,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:17,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:17,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1877378954, now seen corresponding path program 1 times [2024-10-24 02:10:17,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:17,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675899930] [2024-10-24 02:10:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:17,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-24 02:10:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 02:10:17,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:17,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675899930] [2024-10-24 02:10:17,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675899930] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:17,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302148426] [2024-10-24 02:10:17,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:17,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:17,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:17,786 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 02:10:17,788 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 02:10:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:17,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:17,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:10:17,922 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302148426] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597494194] [2024-10-24 02:10:17,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:17,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:17,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:17,924 INFO L87 Difference]: Start difference. First operand 7105 states and 11291 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:10:18,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:18,633 INFO L93 Difference]: Finished difference Result 16767 states and 25811 transitions. [2024-10-24 02:10:18,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:18,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 99 [2024-10-24 02:10:18,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:18,685 INFO L225 Difference]: With dead ends: 16767 [2024-10-24 02:10:18,685 INFO L226 Difference]: Without dead ends: 11793 [2024-10-24 02:10:18,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 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 02:10:18,709 INFO L432 NwaCegarLoop]: 4254 mSDtfsCounter, 145 mSDsluCounter, 4113 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8367 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:18,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8367 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:18,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11793 states. [2024-10-24 02:10:19,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11793 to 11793. [2024-10-24 02:10:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11793 states, 10112 states have (on average 1.5505340189873418) internal successors, (15679), 10229 states have internal predecessors, (15679), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2024-10-24 02:10:19,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11793 states to 11793 states and 18250 transitions. [2024-10-24 02:10:19,537 INFO L78 Accepts]: Start accepts. Automaton has 11793 states and 18250 transitions. Word has length 99 [2024-10-24 02:10:19,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:19,539 INFO L471 AbstractCegarLoop]: Abstraction has 11793 states and 18250 transitions. [2024-10-24 02:10:19,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 02:10:19,539 INFO L276 IsEmpty]: Start isEmpty. Operand 11793 states and 18250 transitions. [2024-10-24 02:10:19,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-10-24 02:10:19,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:19,570 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 02:10:19,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 02:10:19,774 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,SelfDestructingSolverStorable7 [2024-10-24 02:10:19,775 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:19,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:19,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1335572908, now seen corresponding path program 1 times [2024-10-24 02:10:19,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:19,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293296858] [2024-10-24 02:10:19,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:19,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-24 02:10:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-24 02:10:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-24 02:10:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293296858] [2024-10-24 02:10:19,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293296858] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:19,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193011051] [2024-10-24 02:10:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:19,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:19,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:19,897 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 02:10:19,899 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 02:10:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:20,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:20,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:10:20,129 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:20,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193011051] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:20,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:20,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2024-10-24 02:10:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408377155] [2024-10-24 02:10:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:20,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:20,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:20,132 INFO L87 Difference]: Start difference. First operand 11793 states and 18250 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 02:10:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:21,056 INFO L93 Difference]: Finished difference Result 30733 states and 46555 transitions. [2024-10-24 02:10:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 127 [2024-10-24 02:10:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:21,138 INFO L225 Difference]: With dead ends: 30733 [2024-10-24 02:10:21,138 INFO L226 Difference]: Without dead ends: 21075 [2024-10-24 02:10:21,175 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 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 02:10:21,175 INFO L432 NwaCegarLoop]: 4117 mSDtfsCounter, 4053 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4053 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:21,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4053 Valid, 4257 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:21,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21075 states. [2024-10-24 02:10:22,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21075 to 20969. [2024-10-24 02:10:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20969 states, 17708 states have (on average 1.5070589564038852) internal successors, (26687), 17939 states have internal predecessors, (26687), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2024-10-24 02:10:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20969 states to 20969 states and 31594 transitions. [2024-10-24 02:10:22,310 INFO L78 Accepts]: Start accepts. Automaton has 20969 states and 31594 transitions. Word has length 127 [2024-10-24 02:10:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:22,311 INFO L471 AbstractCegarLoop]: Abstraction has 20969 states and 31594 transitions. [2024-10-24 02:10:22,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 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 02:10:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 20969 states and 31594 transitions. [2024-10-24 02:10:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 02:10:22,361 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:22,362 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, 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 02:10:22,379 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 02:10:22,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:22,564 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:22,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 791512030, now seen corresponding path program 1 times [2024-10-24 02:10:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:22,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646638998] [2024-10-24 02:10:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 02:10:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 02:10:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:10:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 02:10:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 02:10:22,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646638998] [2024-10-24 02:10:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646638998] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586351156] [2024-10-24 02:10:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:22,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:22,691 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 02:10:22,692 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 02:10:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:22,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:22,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 02:10:22,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586351156] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819491843] [2024-10-24 02:10:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:22,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:22,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:22,877 INFO L87 Difference]: Start difference. First operand 20969 states and 31594 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:10:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:23,779 INFO L93 Difference]: Finished difference Result 33443 states and 50451 transitions. [2024-10-24 02:10:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 143 [2024-10-24 02:10:23,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:23,860 INFO L225 Difference]: With dead ends: 33443 [2024-10-24 02:10:23,860 INFO L226 Difference]: Without dead ends: 18715 [2024-10-24 02:10:23,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 02:10:23,918 INFO L432 NwaCegarLoop]: 4114 mSDtfsCounter, 4086 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4086 SdHoareTripleChecker+Valid, 4142 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:23,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4086 Valid, 4142 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18715 states. [2024-10-24 02:10:24,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18715 to 14099. [2024-10-24 02:10:24,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14099 states, 12046 states have (on average 1.4857214012950357) internal successors, (17897), 12167 states have internal predecessors, (17897), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2024-10-24 02:10:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14099 states to 14099 states and 20706 transitions. [2024-10-24 02:10:25,003 INFO L78 Accepts]: Start accepts. Automaton has 14099 states and 20706 transitions. Word has length 143 [2024-10-24 02:10:25,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:25,003 INFO L471 AbstractCegarLoop]: Abstraction has 14099 states and 20706 transitions. [2024-10-24 02:10:25,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-10-24 02:10:25,004 INFO L276 IsEmpty]: Start isEmpty. Operand 14099 states and 20706 transitions. [2024-10-24 02:10:25,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-10-24 02:10:25,029 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:25,029 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, 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] [2024-10-24 02:10:25,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 02:10:25,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:25,230 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:25,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:25,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2075302660, now seen corresponding path program 1 times [2024-10-24 02:10:25,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676086464] [2024-10-24 02:10:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:25,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 02:10:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-24 02:10:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:10:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,455 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-24 02:10:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 02:10:25,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:25,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676086464] [2024-10-24 02:10:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676086464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:25,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618205903] [2024-10-24 02:10:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:25,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:25,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:25,462 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 02:10:25,463 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 02:10:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:25,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:10:25,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-10-24 02:10:25,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618205903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:25,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:25,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191335716] [2024-10-24 02:10:25,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:25,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:25,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:25,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:25,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:25,619 INFO L87 Difference]: Start difference. First operand 14099 states and 20706 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:10:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:26,383 INFO L93 Difference]: Finished difference Result 23244 states and 33469 transitions. [2024-10-24 02:10:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 143 [2024-10-24 02:10:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:26,450 INFO L225 Difference]: With dead ends: 23244 [2024-10-24 02:10:26,451 INFO L226 Difference]: Without dead ends: 14923 [2024-10-24 02:10:26,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 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 02:10:26,478 INFO L432 NwaCegarLoop]: 4144 mSDtfsCounter, 4079 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4079 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:26,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4079 Valid, 4289 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14923 states. [2024-10-24 02:10:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14923 to 14857. [2024-10-24 02:10:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14857 states, 12716 states have (on average 1.4599716892104435) internal successors, (18565), 12837 states have internal predecessors, (18565), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2024-10-24 02:10:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 21484 transitions. [2024-10-24 02:10:27,364 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 21484 transitions. Word has length 143 [2024-10-24 02:10:27,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:27,364 INFO L471 AbstractCegarLoop]: Abstraction has 14857 states and 21484 transitions. [2024-10-24 02:10:27,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:10:27,365 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 21484 transitions. [2024-10-24 02:10:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 02:10:27,386 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:27,387 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, 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 02:10:27,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 02:10:27,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 02:10:27,588 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:27,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1556193784, now seen corresponding path program 1 times [2024-10-24 02:10:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892627388] [2024-10-24 02:10:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 02:10:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 02:10:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 02:10:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 02:10:27,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892627388] [2024-10-24 02:10:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892627388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:27,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995438342] [2024-10-24 02:10:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:27,699 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:10:27,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 02:10:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:27,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:27,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-24 02:10:27,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:27,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995438342] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:27,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183911275] [2024-10-24 02:10:27,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:27,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:27,828 INFO L87 Difference]: Start difference. First operand 14857 states and 21484 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:10:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:29,133 INFO L93 Difference]: Finished difference Result 39509 states and 55950 transitions. [2024-10-24 02:10:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2024-10-24 02:10:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:29,239 INFO L225 Difference]: With dead ends: 39509 [2024-10-24 02:10:29,239 INFO L226 Difference]: Without dead ends: 26789 [2024-10-24 02:10:29,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 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 02:10:29,274 INFO L432 NwaCegarLoop]: 4252 mSDtfsCounter, 135 mSDsluCounter, 4111 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:29,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 8363 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26789 states. [2024-10-24 02:10:30,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26789 to 26743. [2024-10-24 02:10:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26743 states, 22644 states have (on average 1.4140169581346052) internal successors, (32019), 22885 states have internal predecessors, (32019), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2024-10-24 02:10:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26743 states to 26743 states and 38062 transitions. [2024-10-24 02:10:30,995 INFO L78 Accepts]: Start accepts. Automaton has 26743 states and 38062 transitions. Word has length 144 [2024-10-24 02:10:30,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:30,996 INFO L471 AbstractCegarLoop]: Abstraction has 26743 states and 38062 transitions. [2024-10-24 02:10:30,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:10:30,996 INFO L276 IsEmpty]: Start isEmpty. Operand 26743 states and 38062 transitions. [2024-10-24 02:10:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 02:10:31,047 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:31,048 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, 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 02:10:31,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 02:10:31,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:31,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:31,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash 125794537, now seen corresponding path program 1 times [2024-10-24 02:10:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463278802] [2024-10-24 02:10:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 02:10:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:10:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 02:10:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,408 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-24 02:10:31,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:31,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463278802] [2024-10-24 02:10:31,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463278802] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040817810] [2024-10-24 02:10:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:31,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:31,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:31,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:10:31,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 02:10:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:31,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:31,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 02:10:31,627 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:31,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040817810] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:31,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:31,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:31,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617754561] [2024-10-24 02:10:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:31,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:31,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:31,630 INFO L87 Difference]: Start difference. First operand 26743 states and 38062 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-24 02:10:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:33,099 INFO L93 Difference]: Finished difference Result 52491 states and 75074 transitions. [2024-10-24 02:10:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) Word has length 144 [2024-10-24 02:10:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:33,225 INFO L225 Difference]: With dead ends: 52491 [2024-10-24 02:10:33,225 INFO L226 Difference]: Without dead ends: 27885 [2024-10-24 02:10:33,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 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 02:10:33,292 INFO L432 NwaCegarLoop]: 4108 mSDtfsCounter, 4065 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4065 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:33,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4065 Valid, 4135 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:33,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27885 states. [2024-10-24 02:10:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27885 to 27841. [2024-10-24 02:10:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27841 states, 23682 states have (on average 1.3691833460011824) internal successors, (32425), 23923 states have internal predecessors, (32425), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2024-10-24 02:10:35,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27841 states to 27841 states and 38424 transitions. [2024-10-24 02:10:35,322 INFO L78 Accepts]: Start accepts. Automaton has 27841 states and 38424 transitions. Word has length 144 [2024-10-24 02:10:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:35,322 INFO L471 AbstractCegarLoop]: Abstraction has 27841 states and 38424 transitions. [2024-10-24 02:10:35,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-10-24 02:10:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27841 states and 38424 transitions. [2024-10-24 02:10:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-24 02:10:35,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:35,365 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, 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] [2024-10-24 02:10:35,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 02:10:35,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:35,566 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:35,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash -782339540, now seen corresponding path program 1 times [2024-10-24 02:10:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095724546] [2024-10-24 02:10:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 02:10:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-24 02:10:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-24 02:10:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-24 02:10:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-24 02:10:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095724546] [2024-10-24 02:10:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095724546] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796615261] [2024-10-24 02:10:35,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:35,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:35,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:10:35,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 02:10:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:35,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 02:10:35,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 02:10:35,808 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:35,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796615261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:35,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:35,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:35,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223850148] [2024-10-24 02:10:35,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:35,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:35,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:35,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:35,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:35,810 INFO L87 Difference]: Start difference. First operand 27841 states and 38424 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:10:38,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:38,718 INFO L93 Difference]: Finished difference Result 75539 states and 103548 transitions. [2024-10-24 02:10:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:38,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 144 [2024-10-24 02:10:38,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:38,902 INFO L225 Difference]: With dead ends: 75539 [2024-10-24 02:10:38,902 INFO L226 Difference]: Without dead ends: 49843 [2024-10-24 02:10:38,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 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 02:10:38,959 INFO L432 NwaCegarLoop]: 4247 mSDtfsCounter, 139 mSDsluCounter, 4107 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:38,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 8354 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49843 states. [2024-10-24 02:10:42,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49843 to 49841. [2024-10-24 02:10:42,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49841 states, 41974 states have (on average 1.333468337542288) internal successors, (55971), 42455 states have internal predecessors, (55971), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-10-24 02:10:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49841 states to 49841 states and 68436 transitions. [2024-10-24 02:10:42,267 INFO L78 Accepts]: Start accepts. Automaton has 49841 states and 68436 transitions. Word has length 144 [2024-10-24 02:10:42,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:42,268 INFO L471 AbstractCegarLoop]: Abstraction has 49841 states and 68436 transitions. [2024-10-24 02:10:42,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-10-24 02:10:42,268 INFO L276 IsEmpty]: Start isEmpty. Operand 49841 states and 68436 transitions. [2024-10-24 02:10:42,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 02:10:42,337 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:42,338 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, 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] [2024-10-24 02:10:42,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-24 02:10:42,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-24 02:10:42,539 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:42,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash -873894743, now seen corresponding path program 1 times [2024-10-24 02:10:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:42,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078486811] [2024-10-24 02:10:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 02:10:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 02:10:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-24 02:10:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 02:10:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-24 02:10:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078486811] [2024-10-24 02:10:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078486811] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660169997] [2024-10-24 02:10:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:42,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:42,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:10:42,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 02:10:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:42,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:10:42,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:43,002 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 02:10:43,002 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:43,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660169997] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:43,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42592637] [2024-10-24 02:10:43,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:43,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:43,004 INFO L87 Difference]: Start difference. First operand 49841 states and 68436 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:10:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 02:10:45,784 INFO L93 Difference]: Finished difference Result 87149 states and 119166 transitions. [2024-10-24 02:10:45,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 02:10:45,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 145 [2024-10-24 02:10:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 02:10:45,956 INFO L225 Difference]: With dead ends: 87149 [2024-10-24 02:10:45,956 INFO L226 Difference]: Without dead ends: 51011 [2024-10-24 02:10:46,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 166 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 02:10:46,016 INFO L432 NwaCegarLoop]: 4134 mSDtfsCounter, 4085 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 02:10:46,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 4275 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 02:10:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51011 states. [2024-10-24 02:10:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51011 to 49721. [2024-10-24 02:10:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49721 states, 41854 states have (on average 1.324389544607445) internal successors, (55431), 42335 states have internal predecessors, (55431), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-10-24 02:10:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49721 states to 49721 states and 67896 transitions. [2024-10-24 02:10:49,318 INFO L78 Accepts]: Start accepts. Automaton has 49721 states and 67896 transitions. Word has length 145 [2024-10-24 02:10:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 02:10:49,319 INFO L471 AbstractCegarLoop]: Abstraction has 49721 states and 67896 transitions. [2024-10-24 02:10:49,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 02:10:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 49721 states and 67896 transitions. [2024-10-24 02:10:49,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-10-24 02:10:49,366 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 02:10:49,366 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, 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] [2024-10-24 02:10:49,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 02:10:49,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-24 02:10:49,567 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 02:10:49,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 02:10:49,568 INFO L85 PathProgramCache]: Analyzing trace with hash 133090187, now seen corresponding path program 1 times [2024-10-24 02:10:49,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 02:10:49,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184513782] [2024-10-24 02:10:49,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:49,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 02:10:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 02:10:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 02:10:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-24 02:10:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 02:10:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 02:10:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 02:10:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-24 02:10:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-24 02:10:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 02:10:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-24 02:10:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-24 02:10:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 02:10:49,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184513782] [2024-10-24 02:10:49,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184513782] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 02:10:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413774016] [2024-10-24 02:10:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 02:10:49,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 02:10:49,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 02:10:49,703 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 02:10:49,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 02:10:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 02:10:49,809 INFO L255 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 02:10:49,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 02:10:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-24 02:10:49,859 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 02:10:49,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413774016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 02:10:49,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 02:10:49,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-10-24 02:10:49,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309379254] [2024-10-24 02:10:49,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 02:10:49,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 02:10:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 02:10:49,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 02:10:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 02:10:49,861 INFO L87 Difference]: Start difference. First operand 49721 states and 67896 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9)