./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:43:16,552 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:43:16,620 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:43:16,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:43:16,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:43:16,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:43:16,653 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:43:16,653 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:43:16,654 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:43:16,654 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:43:16,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:43:16,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:43:16,655 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:43:16,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:43:16,655 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:43:16,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:43:16,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:43:16,656 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:43:16,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:43:16,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:43:16,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:43:16,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:43:16,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:43:16,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:43:16,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:43:16,663 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:43:16,663 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:43:16,663 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:16,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:43:16,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:43:16,664 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:43:16,665 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:43:16,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 713a95fba13367522eddac239136ad149ef56d491623153a32513b25fa3198dd [2024-11-18 15:43:16,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:43:16,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:43:16,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:43:16,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:43:16,906 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:43:16,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2024-11-18 15:43:18,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:43:18,669 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:43:18,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c [2024-11-18 15:43:18,729 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcaca8c5/35f76705eb5e4a6f99257d82a0824366/FLAG580aa9f0a [2024-11-18 15:43:19,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcaca8c5/35f76705eb5e4a6f99257d82a0824366 [2024-11-18 15:43:19,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:43:19,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:43:19,245 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:19,245 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:43:19,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:43:19,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:19" (1/1) ... [2024-11-18 15:43:19,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151ea23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:19, skipping insertion in model container [2024-11-18 15:43:19,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:43:19" (1/1) ... [2024-11-18 15:43:19,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:43:20,736 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2024-11-18 15:43:20,759 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2024-11-18 15:43:20,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:20,906 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:43:21,521 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[380593,380606] [2024-11-18 15:43:21,525 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.03.cil-2.c[383339,383352] [2024-11-18 15:43:21,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:43:21,582 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:43:21,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21 WrapperNode [2024-11-18 15:43:21,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:43:21,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:21,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:43:21,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:43:21,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:21,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:21,964 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-11-18 15:43:21,964 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:43:21,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:43:21,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:43:21,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:43:21,975 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:21,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,018 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,089 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]. [2024-11-18 15:43:22,090 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,487 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:43:22,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:43:22,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:43:22,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:43:22,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (1/1) ... [2024-11-18 15:43:22,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:43:22,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:22,552 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) [2024-11-18 15:43:22,558 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 [2024-11-18 15:43:22,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:43:22,634 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:43:22,634 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:43:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:43:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:43:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:43:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:43:22,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:43:22,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:43:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:43:22,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:43:22,788 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:43:22,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:43:28,821 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-18 15:43:28,822 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:43:28,873 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:43:28,874 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-18 15:43:28,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:28 BoogieIcfgContainer [2024-11-18 15:43:28,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:43:28,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:43:28,878 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:43:28,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:43:28,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:43:19" (1/3) ... [2024-11-18 15:43:28,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8a61d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:28, skipping insertion in model container [2024-11-18 15:43:28,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:43:21" (2/3) ... [2024-11-18 15:43:28,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8a61d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:43:28, skipping insertion in model container [2024-11-18 15:43:28,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:43:28" (3/3) ... [2024-11-18 15:43:28,883 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.03.cil-2.c [2024-11-18 15:43:28,899 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:43:28,900 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:43:29,017 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:43:29,023 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;@1a3378b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:43:29,023 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:43:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-18 15:43:29,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:29,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:29,048 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:29,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:29,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2024-11-18 15:43:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:29,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506119192] [2024-11-18 15:43:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506119192] [2024-11-18 15:43:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506119192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:29,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:43:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567962774] [2024-11-18 15:43:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:29,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:43:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:29,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:43:29,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:43:29,451 INFO L87 Difference]: Start difference. First operand has 2344 states, 2318 states have (on average 1.8541846419327006) internal successors, (4298), 2321 states have internal predecessors, (4298), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:29,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:29,957 INFO L93 Difference]: Finished difference Result 4837 states and 8901 transitions. [2024-11-18 15:43:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:43:29,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:29,998 INFO L225 Difference]: With dead ends: 4837 [2024-11-18 15:43:29,998 INFO L226 Difference]: Without dead ends: 2434 [2024-11-18 15:43:30,005 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:30,008 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4415 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 12703 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:30,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 12703 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-18 15:43:30,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2423. [2024-11-18 15:43:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2379 states have (on average 1.8263976460697773) internal successors, (4345), 2382 states have internal predecessors, (4345), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-18 15:43:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4404 transitions. [2024-11-18 15:43:30,135 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4404 transitions. Word has length 79 [2024-11-18 15:43:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:30,136 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4404 transitions. [2024-11-18 15:43:30,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4404 transitions. [2024-11-18 15:43:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:30,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:30,140 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:30,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:43:30,140 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:30,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2024-11-18 15:43:30,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:30,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976739694] [2024-11-18 15:43:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:30,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:30,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:30,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976739694] [2024-11-18 15:43:30,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976739694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:30,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:30,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631366797] [2024-11-18 15:43:30,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:30,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:30,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:30,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:30,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:30,285 INFO L87 Difference]: Start difference. First operand 2423 states and 4404 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:30,738 INFO L93 Difference]: Finished difference Result 2894 states and 5109 transitions. [2024-11-18 15:43:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:30,754 INFO L225 Difference]: With dead ends: 2894 [2024-11-18 15:43:30,754 INFO L226 Difference]: Without dead ends: 2603 [2024-11-18 15:43:30,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:30,758 INFO L432 NwaCegarLoop]: 4250 mSDtfsCounter, 4340 mSDsluCounter, 12729 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 16979 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:30,758 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 16979 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:30,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2024-11-18 15:43:30,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2560. [2024-11-18 15:43:30,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2560 states, 2497 states have (on average 1.8093712454945936) internal successors, (4518), 2501 states have internal predecessors, (4518), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-18 15:43:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4604 transitions. [2024-11-18 15:43:30,815 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4604 transitions. Word has length 79 [2024-11-18 15:43:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:30,815 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4604 transitions. [2024-11-18 15:43:30,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4604 transitions. [2024-11-18 15:43:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:30,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:30,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:30,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:43:30,823 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:30,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2024-11-18 15:43:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:30,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767640797] [2024-11-18 15:43:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:30,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:30,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767640797] [2024-11-18 15:43:30,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767640797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:30,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:30,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955727592] [2024-11-18 15:43:30,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:30,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:30,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:30,946 INFO L87 Difference]: Start difference. First operand 2560 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:31,346 INFO L93 Difference]: Finished difference Result 3321 states and 5740 transitions. [2024-11-18 15:43:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:31,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:31,358 INFO L225 Difference]: With dead ends: 3321 [2024-11-18 15:43:31,358 INFO L226 Difference]: Without dead ends: 2893 [2024-11-18 15:43:31,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:31,362 INFO L432 NwaCegarLoop]: 4246 mSDtfsCounter, 4335 mSDsluCounter, 12717 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 16963 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:31,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 16963 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2024-11-18 15:43:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2847. [2024-11-18 15:43:31,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2744 states have (on average 1.779518950437318) internal successors, (4883), 2752 states have internal predecessors, (4883), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-18 15:43:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 5029 transitions. [2024-11-18 15:43:31,437 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 5029 transitions. Word has length 79 [2024-11-18 15:43:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:31,437 INFO L471 AbstractCegarLoop]: Abstraction has 2847 states and 5029 transitions. [2024-11-18 15:43:31,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 5029 transitions. [2024-11-18 15:43:31,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:31,439 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:31,439 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:31,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:43:31,440 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:31,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2024-11-18 15:43:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639660768] [2024-11-18 15:43:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639660768] [2024-11-18 15:43:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639660768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:31,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676553289] [2024-11-18 15:43:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:31,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:31,543 INFO L87 Difference]: Start difference. First operand 2847 states and 5029 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:31,971 INFO L93 Difference]: Finished difference Result 4222 states and 7099 transitions. [2024-11-18 15:43:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:31,989 INFO L225 Difference]: With dead ends: 4222 [2024-11-18 15:43:31,989 INFO L226 Difference]: Without dead ends: 3507 [2024-11-18 15:43:31,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:31,995 INFO L432 NwaCegarLoop]: 4243 mSDtfsCounter, 4330 mSDsluCounter, 12708 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:31,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16951 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2024-11-18 15:43:32,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3454. [2024-11-18 15:43:32,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3454 states, 3265 states have (on average 1.7332312404287902) internal successors, (5659), 3287 states have internal predecessors, (5659), 113 states have call successors, (113), 54 states have call predecessors, (113), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-18 15:43:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5949 transitions. [2024-11-18 15:43:32,190 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5949 transitions. Word has length 79 [2024-11-18 15:43:32,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:32,190 INFO L471 AbstractCegarLoop]: Abstraction has 3454 states and 5949 transitions. [2024-11-18 15:43:32,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:32,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5949 transitions. [2024-11-18 15:43:32,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:32,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:32,194 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:32,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:43:32,195 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:32,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2024-11-18 15:43:32,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:32,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315927982] [2024-11-18 15:43:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:32,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315927982] [2024-11-18 15:43:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315927982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931625057] [2024-11-18 15:43:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:32,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:32,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:32,315 INFO L87 Difference]: Start difference. First operand 3454 states and 5949 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:32,867 INFO L93 Difference]: Finished difference Result 6345 states and 10390 transitions. [2024-11-18 15:43:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:32,868 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:32,889 INFO L225 Difference]: With dead ends: 6345 [2024-11-18 15:43:32,889 INFO L226 Difference]: Without dead ends: 5023 [2024-11-18 15:43:32,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:32,897 INFO L432 NwaCegarLoop]: 4238 mSDtfsCounter, 4429 mSDsluCounter, 12688 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 16926 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:32,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 16926 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2024-11-18 15:43:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 4725. [2024-11-18 15:43:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4354 states have (on average 1.676389526871842) internal successors, (7299), 4422 states have internal predecessors, (7299), 201 states have call successors, (201), 102 states have call predecessors, (201), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-18 15:43:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7957 transitions. [2024-11-18 15:43:33,127 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7957 transitions. Word has length 79 [2024-11-18 15:43:33,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:33,128 INFO L471 AbstractCegarLoop]: Abstraction has 4725 states and 7957 transitions. [2024-11-18 15:43:33,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7957 transitions. [2024-11-18 15:43:33,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:33,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:33,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:33,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:43:33,132 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:33,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2024-11-18 15:43:33,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372711880] [2024-11-18 15:43:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:33,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:33,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372711880] [2024-11-18 15:43:33,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372711880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:33,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:33,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263358744] [2024-11-18 15:43:33,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:33,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:33,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:33,247 INFO L87 Difference]: Start difference. First operand 4725 states and 7957 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:33,891 INFO L93 Difference]: Finished difference Result 10448 states and 17168 transitions. [2024-11-18 15:43:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:33,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:33,938 INFO L225 Difference]: With dead ends: 10448 [2024-11-18 15:43:33,939 INFO L226 Difference]: Without dead ends: 7855 [2024-11-18 15:43:33,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:33,956 INFO L432 NwaCegarLoop]: 4234 mSDtfsCounter, 4342 mSDsluCounter, 12676 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4352 SdHoareTripleChecker+Valid, 16910 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:33,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 16910 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:33,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2024-11-18 15:43:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7352. [2024-11-18 15:43:34,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 6571 states have (on average 1.6196925886470857) internal successors, (10643), 6785 states have internal predecessors, (10643), 369 states have call successors, (369), 198 states have call predecessors, (369), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-18 15:43:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 12405 transitions. [2024-11-18 15:43:34,264 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 12405 transitions. Word has length 79 [2024-11-18 15:43:34,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:34,264 INFO L471 AbstractCegarLoop]: Abstraction has 7352 states and 12405 transitions. [2024-11-18 15:43:34,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 12405 transitions. [2024-11-18 15:43:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:34,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:34,268 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:34,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:43:34,269 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:34,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:34,269 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2024-11-18 15:43:34,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:34,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523009048] [2024-11-18 15:43:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:34,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:34,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523009048] [2024-11-18 15:43:34,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523009048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:34,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:34,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:43:34,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698149221] [2024-11-18 15:43:34,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:34,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:43:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:43:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:34,338 INFO L87 Difference]: Start difference. First operand 7352 states and 12405 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:35,003 INFO L93 Difference]: Finished difference Result 18357 states and 31658 transitions. [2024-11-18 15:43:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:43:35,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:35,059 INFO L225 Difference]: With dead ends: 18357 [2024-11-18 15:43:35,059 INFO L226 Difference]: Without dead ends: 13137 [2024-11-18 15:43:35,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:43:35,083 INFO L432 NwaCegarLoop]: 4228 mSDtfsCounter, 4326 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4341 SdHoareTripleChecker+Valid, 16888 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:35,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16888 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 15:43:35,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13137 states. [2024-11-18 15:43:35,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 12800. [2024-11-18 15:43:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12800 states, 11053 states have (on average 1.5605717904641274) internal successors, (17249), 11721 states have internal predecessors, (17249), 689 states have call successors, (689), 390 states have call predecessors, (689), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-18 15:43:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12800 states to 12800 states and 22723 transitions. [2024-11-18 15:43:35,633 INFO L78 Accepts]: Start accepts. Automaton has 12800 states and 22723 transitions. Word has length 79 [2024-11-18 15:43:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:35,634 INFO L471 AbstractCegarLoop]: Abstraction has 12800 states and 22723 transitions. [2024-11-18 15:43:35,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 12800 states and 22723 transitions. [2024-11-18 15:43:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:43:35,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:35,644 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:35,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:43:35,644 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:35,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2024-11-18 15:43:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:35,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797297297] [2024-11-18 15:43:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:35,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:43:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797297297] [2024-11-18 15:43:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797297297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:35,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:43:35,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:43:35,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634968094] [2024-11-18 15:43:35,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:35,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:43:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:43:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:43:35,823 INFO L87 Difference]: Start difference. First operand 12800 states and 22723 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:36,385 INFO L93 Difference]: Finished difference Result 29247 states and 51750 transitions. [2024-11-18 15:43:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:43:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 79 [2024-11-18 15:43:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:36,468 INFO L225 Difference]: With dead ends: 29247 [2024-11-18 15:43:36,468 INFO L226 Difference]: Without dead ends: 18580 [2024-11-18 15:43:36,520 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:43:36,523 INFO L432 NwaCegarLoop]: 4379 mSDtfsCounter, 4346 mSDsluCounter, 4316 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 8695 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:36,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 8695 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 15:43:36,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18580 states. [2024-11-18 15:43:37,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18580 to 17737. [2024-11-18 15:43:37,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 15215 states have (on average 1.524745317121262) internal successors, (23199), 16128 states have internal predecessors, (23199), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-18 15:43:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 30396 transitions. [2024-11-18 15:43:37,399 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 30396 transitions. Word has length 79 [2024-11-18 15:43:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:37,400 INFO L471 AbstractCegarLoop]: Abstraction has 17737 states and 30396 transitions. [2024-11-18 15:43:37,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:43:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 30396 transitions. [2024-11-18 15:43:37,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:43:37,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:37,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:37,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:43:37,440 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:37,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:37,441 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2024-11-18 15:43:37,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:37,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64908713] [2024-11-18 15:43:37,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:37,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:43:37,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:37,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64908713] [2024-11-18 15:43:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64908713] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:37,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823110949] [2024-11-18 15:43:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:37,514 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) [2024-11-18 15:43:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 15:43:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:37,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:37,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-18 15:43:37,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:37,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823110949] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:37,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:37,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:43:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49980624] [2024-11-18 15:43:37,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:37,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:37,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:37,699 INFO L87 Difference]: Start difference. First operand 17737 states and 30396 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2024-11-18 15:43:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:39,126 INFO L93 Difference]: Finished difference Result 48598 states and 83088 transitions. [2024-11-18 15:43:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:39,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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 129 [2024-11-18 15:43:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:39,288 INFO L225 Difference]: With dead ends: 48598 [2024-11-18 15:43:39,288 INFO L226 Difference]: Without dead ends: 32994 [2024-11-18 15:43:39,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:39,349 INFO L432 NwaCegarLoop]: 4183 mSDtfsCounter, 4139 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:39,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:39,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32994 states. [2024-11-18 15:43:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32994 to 32796. [2024-11-18 15:43:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32796 states, 27808 states have (on average 1.4974108170310703) internal successors, (41640), 29632 states have internal predecessors, (41640), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-18 15:43:41,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 55863 transitions. [2024-11-18 15:43:41,025 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 55863 transitions. Word has length 129 [2024-11-18 15:43:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:41,026 INFO L471 AbstractCegarLoop]: Abstraction has 32796 states and 55863 transitions. [2024-11-18 15:43:41,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 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) [2024-11-18 15:43:41,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 55863 transitions. [2024-11-18 15:43:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:43:41,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:41,109 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:41,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 15:43:41,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:41,310 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:41,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2024-11-18 15:43:41,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:41,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879751784] [2024-11-18 15:43:41,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:41,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:43:41,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879751784] [2024-11-18 15:43:41,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879751784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:41,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736142964] [2024-11-18 15:43:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:41,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:41,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:41,404 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) [2024-11-18 15:43:41,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 15:43:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:41,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:41,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-18 15:43:41,564 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:41,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736142964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:41,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:41,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:43:41,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316555051] [2024-11-18 15:43:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:41,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:41,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:41,570 INFO L87 Difference]: Start difference. First operand 32796 states and 55863 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-18 15:43:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:44,088 INFO L93 Difference]: Finished difference Result 93429 states and 159357 transitions. [2024-11-18 15:43:44,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:44,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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 129 [2024-11-18 15:43:44,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:44,367 INFO L225 Difference]: With dead ends: 93429 [2024-11-18 15:43:44,367 INFO L226 Difference]: Without dead ends: 62766 [2024-11-18 15:43:44,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:44,446 INFO L432 NwaCegarLoop]: 4183 mSDtfsCounter, 4133 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4384 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:44,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4384 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62766 states. [2024-11-18 15:43:47,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62766 to 62372. [2024-11-18 15:43:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62372 states, 52502 states have (on average 1.4806293093596434) internal successors, (77736), 56148 states have internal predecessors, (77736), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-18 15:43:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62372 states to 62372 states and 105911 transitions. [2024-11-18 15:43:48,203 INFO L78 Accepts]: Start accepts. Automaton has 62372 states and 105911 transitions. Word has length 129 [2024-11-18 15:43:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:43:48,204 INFO L471 AbstractCegarLoop]: Abstraction has 62372 states and 105911 transitions. [2024-11-18 15:43:48,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 2 states have internal predecessors, (99), 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) [2024-11-18 15:43:48,204 INFO L276 IsEmpty]: Start isEmpty. Operand 62372 states and 105911 transitions. [2024-11-18 15:43:48,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:43:48,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:43:48,302 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:43:48,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 15:43:48,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-18 15:43:48,507 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:43:48,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:43:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash 467842687, now seen corresponding path program 1 times [2024-11-18 15:43:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:43:48,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904093408] [2024-11-18 15:43:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:43:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:48,579 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-18 15:43:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:43:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904093408] [2024-11-18 15:43:48,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904093408] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:43:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156573271] [2024-11-18 15:43:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:43:48,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:43:48,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:43:48,583 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) [2024-11-18 15:43:48,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 15:43:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:43:48,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:43:48,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:43:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 15:43:48,698 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:43:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156573271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:43:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:43:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:43:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547001864] [2024-11-18 15:43:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:43:48,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:43:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:43:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:43:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:48,700 INFO L87 Difference]: Start difference. First operand 62372 states and 105911 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 15:43:53,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:43:53,166 INFO L93 Difference]: Finished difference Result 180617 states and 309261 transitions. [2024-11-18 15:43:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:43:53,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 129 [2024-11-18 15:43:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:43:53,830 INFO L225 Difference]: With dead ends: 180617 [2024-11-18 15:43:53,830 INFO L226 Difference]: Without dead ends: 120379 [2024-11-18 15:43:54,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:43:54,199 INFO L432 NwaCegarLoop]: 4388 mSDtfsCounter, 197 mSDsluCounter, 4182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8570 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:43:54,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 8570 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:43:54,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120379 states. [2024-11-18 15:43:59,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120379 to 120379. [2024-11-18 15:44:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120379 states, 100906 states have (on average 1.468961211424494) internal successors, (148227), 108065 states have internal predecessors, (148227), 7743 states have call successors, (7743), 4704 states have call predecessors, (7743), 11728 states have return successors, (49462), 7737 states have call predecessors, (49462), 7743 states have call successors, (49462) [2024-11-18 15:44:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120379 states to 120379 states and 205432 transitions. [2024-11-18 15:44:00,990 INFO L78 Accepts]: Start accepts. Automaton has 120379 states and 205432 transitions. Word has length 129 [2024-11-18 15:44:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:44:00,991 INFO L471 AbstractCegarLoop]: Abstraction has 120379 states and 205432 transitions. [2024-11-18 15:44:00,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-11-18 15:44:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 120379 states and 205432 transitions.