./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label44+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_label44+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 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:36:16,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:36:16,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:36:16,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:36:16,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:36:16,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:36:16,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:36:16,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:36:16,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:36:16,684 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:36:16,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:36:16,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:36:16,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:36:16,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:36:16,689 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:36:16,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:36:16,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:36:16,690 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:36:16,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:36:16,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:36:16,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:36:16,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:36:16,695 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:36:16,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:36:16,696 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:36:16,696 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:36:16,697 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:36:16,697 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:36:16,697 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:36:16,698 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:36:16,698 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:36:16,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:36:16,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:36:16,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:36:16,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:36:16,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:36:16,701 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:36:16,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:36:16,701 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:36:16,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:36:16,702 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:36:16,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:36:16,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a16e358cfe89c56ff212fd47034f5c1550027d42d4d56ed5c454e284a697aae [2024-11-18 15:36:16,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:36:16,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:36:16,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:36:16,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:36:16,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:36:16,981 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2024-11-18 15:36:18,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:36:19,078 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:36:19,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label44+token_ring.03.cil-2.c [2024-11-18 15:36:19,144 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c04ec82/27a1e335be0a4554abdc271256100f04/FLAGfd340f8ad [2024-11-18 15:36:19,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c04ec82/27a1e335be0a4554abdc271256100f04 [2024-11-18 15:36:19,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:36:19,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:36:19,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:36:19,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:36:19,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:36:19,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:36:19" (1/1) ... [2024-11-18 15:36:19,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41afb81b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:19, skipping insertion in model container [2024-11-18 15:36:19,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:36:19" (1/1) ... [2024-11-18 15:36:19,404 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:36:20,966 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_label44+token_ring.03.cil-2.c[377340,377353] [2024-11-18 15:36:20,999 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_label44+token_ring.03.cil-2.c[383339,383352] [2024-11-18 15:36:21,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:36:21,167 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:36:21,975 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_label44+token_ring.03.cil-2.c[377340,377353] [2024-11-18 15:36:21,991 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_label44+token_ring.03.cil-2.c[383339,383352] [2024-11-18 15:36:22,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:36:22,077 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:36:22,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22 WrapperNode [2024-11-18 15:36:22,078 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:36:22,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:36:22,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:36:22,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:36:22,086 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,724 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12693 [2024-11-18 15:36:22,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:36:22,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:36:22,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:36:22,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:36:22,737 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,806 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,876 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 15:36:22,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:22,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,088 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:36:23,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:36:23,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:36:23,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:36:23,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (1/1) ... [2024-11-18 15:36:23,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:36:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:36:23,339 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 15:36:23,345 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 15:36:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:36:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:36:23,391 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:36:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:36:23,392 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:36:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:36:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:36:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:36:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:36:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:36:23,393 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:36:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:36:23,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:36:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:36:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:36:23,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:36:23,560 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:36:23,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:36:31,355 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-18 15:36:31,355 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:36:31,422 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:36:31,423 INFO L316 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-18 15:36:31,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:36:31 BoogieIcfgContainer [2024-11-18 15:36:31,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:36:31,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:36:31,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:36:31,431 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:36:31,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:36:19" (1/3) ... [2024-11-18 15:36:31,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c0d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:36:31, skipping insertion in model container [2024-11-18 15:36:31,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:36:22" (2/3) ... [2024-11-18 15:36:31,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357c0d6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:36:31, skipping insertion in model container [2024-11-18 15:36:31,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:36:31" (3/3) ... [2024-11-18 15:36:31,433 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.03.cil-2.c [2024-11-18 15:36:31,449 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:36:31,450 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:36:31,570 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:36:31,577 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;@de9f482, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:36:31,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:36:31,590 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 15:36:31,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:31,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:31,602 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 15:36:31,602 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:31,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:31,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1659781244, now seen corresponding path program 1 times [2024-11-18 15:36:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:31,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526879652] [2024-11-18 15:36:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:32,079 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 15:36:32,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526879652] [2024-11-18 15:36:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526879652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:32,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 15:36:32,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997203986] [2024-11-18 15:36:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:32,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 15:36:32,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 15:36:32,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 15:36:32,137 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 15:36:32,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:32,766 INFO L93 Difference]: Finished difference Result 4837 states and 8901 transitions. [2024-11-18 15:36:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 15:36:32,769 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 15:36:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:32,801 INFO L225 Difference]: With dead ends: 4837 [2024-11-18 15:36:32,802 INFO L226 Difference]: Without dead ends: 2434 [2024-11-18 15:36:32,815 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 15:36:32,819 INFO L432 NwaCegarLoop]: 4206 mSDtfsCounter, 4415 mSDsluCounter, 8497 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:32,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 12703 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2024-11-18 15:36:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2423. [2024-11-18 15:36:32,961 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 15:36:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4404 transitions. [2024-11-18 15:36:32,976 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4404 transitions. Word has length 79 [2024-11-18 15:36:32,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:32,977 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4404 transitions. [2024-11-18 15:36:32,977 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 15:36:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4404 transitions. [2024-11-18 15:36:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:32,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:32,981 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 15:36:32,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:36:32,982 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:32,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1422733048, now seen corresponding path program 1 times [2024-11-18 15:36:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:32,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886472674] [2024-11-18 15:36:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:33,241 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 15:36:33,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:33,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886472674] [2024-11-18 15:36:33,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886472674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:33,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:33,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:33,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631503071] [2024-11-18 15:36:33,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:33,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:33,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:33,249 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 15:36:33,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:33,878 INFO L93 Difference]: Finished difference Result 2894 states and 5109 transitions. [2024-11-18 15:36:33,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:33,879 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 15:36:33,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:33,894 INFO L225 Difference]: With dead ends: 2894 [2024-11-18 15:36:33,895 INFO L226 Difference]: Without dead ends: 2603 [2024-11-18 15:36:33,899 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 15:36:33,900 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:33,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 16979 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:36:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2024-11-18 15:36:33,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2560. [2024-11-18 15:36:33,965 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 15:36:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 4604 transitions. [2024-11-18 15:36:33,978 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 4604 transitions. Word has length 79 [2024-11-18 15:36:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:33,979 INFO L471 AbstractCegarLoop]: Abstraction has 2560 states and 4604 transitions. [2024-11-18 15:36:33,979 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 15:36:33,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 4604 transitions. [2024-11-18 15:36:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:33,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:33,986 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 15:36:33,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:36:33,987 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:33,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1477125946, now seen corresponding path program 1 times [2024-11-18 15:36:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378011530] [2024-11-18 15:36:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:36:34,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:34,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378011530] [2024-11-18 15:36:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378011530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:34,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:34,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714910672] [2024-11-18 15:36:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:34,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:34,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:34,176 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 15:36:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:34,668 INFO L93 Difference]: Finished difference Result 3321 states and 5740 transitions. [2024-11-18 15:36:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:34,669 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 15:36:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:34,684 INFO L225 Difference]: With dead ends: 3321 [2024-11-18 15:36:34,685 INFO L226 Difference]: Without dead ends: 2893 [2024-11-18 15:36:34,689 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 15:36:34,690 INFO L432 NwaCegarLoop]: 4246 mSDtfsCounter, 4335 mSDsluCounter, 12717 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:34,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 16963 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:34,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2893 states. [2024-11-18 15:36:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2893 to 2847. [2024-11-18 15:36:34,772 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 15:36:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 5029 transitions. [2024-11-18 15:36:34,787 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 5029 transitions. Word has length 79 [2024-11-18 15:36:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:34,789 INFO L471 AbstractCegarLoop]: Abstraction has 2847 states and 5029 transitions. [2024-11-18 15:36:34,789 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 15:36:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 5029 transitions. [2024-11-18 15:36:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:34,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:34,792 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 15:36:34,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:36:34,792 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:34,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:34,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1894522552, now seen corresponding path program 1 times [2024-11-18 15:36:34,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:34,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603018166] [2024-11-18 15:36:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:34,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:34,926 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 15:36:34,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:34,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603018166] [2024-11-18 15:36:34,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603018166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:34,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:34,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:34,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654037308] [2024-11-18 15:36:34,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:34,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:34,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:34,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:34,929 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 15:36:35,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:35,467 INFO L93 Difference]: Finished difference Result 4222 states and 7099 transitions. [2024-11-18 15:36:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:35,468 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 15:36:35,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:35,489 INFO L225 Difference]: With dead ends: 4222 [2024-11-18 15:36:35,490 INFO L226 Difference]: Without dead ends: 3507 [2024-11-18 15:36:35,496 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 15:36:35,498 INFO L432 NwaCegarLoop]: 4243 mSDtfsCounter, 4330 mSDsluCounter, 12708 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:35,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16951 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:35,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2024-11-18 15:36:35,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3454. [2024-11-18 15:36:35,655 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 15:36:35,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 5949 transitions. [2024-11-18 15:36:35,674 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 5949 transitions. Word has length 79 [2024-11-18 15:36:35,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:35,675 INFO L471 AbstractCegarLoop]: Abstraction has 3454 states and 5949 transitions. [2024-11-18 15:36:35,675 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 15:36:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 5949 transitions. [2024-11-18 15:36:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:35,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:35,679 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 15:36:35,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:36:35,680 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:35,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:35,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1215250298, now seen corresponding path program 1 times [2024-11-18 15:36:35,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:35,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461180184] [2024-11-18 15:36:35,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:35,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:35,803 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 15:36:35,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461180184] [2024-11-18 15:36:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461180184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:35,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:35,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918343888] [2024-11-18 15:36:35,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:35,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:35,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:35,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:35,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:35,807 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 15:36:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:36,429 INFO L93 Difference]: Finished difference Result 6345 states and 10390 transitions. [2024-11-18 15:36:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:36,429 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 15:36:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:36,455 INFO L225 Difference]: With dead ends: 6345 [2024-11-18 15:36:36,455 INFO L226 Difference]: Without dead ends: 5023 [2024-11-18 15:36:36,462 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 15:36:36,463 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:36,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4444 Valid, 16926 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:36,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5023 states. [2024-11-18 15:36:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5023 to 4725. [2024-11-18 15:36:36,644 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 15:36:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 7957 transitions. [2024-11-18 15:36:36,660 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 7957 transitions. Word has length 79 [2024-11-18 15:36:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:36,661 INFO L471 AbstractCegarLoop]: Abstraction has 4725 states and 7957 transitions. [2024-11-18 15:36:36,661 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 15:36:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 7957 transitions. [2024-11-18 15:36:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:36,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:36,665 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 15:36:36,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:36:36,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:36,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash 746324360, now seen corresponding path program 1 times [2024-11-18 15:36:36,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:36,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112407212] [2024-11-18 15:36:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:36,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:36,787 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 15:36:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112407212] [2024-11-18 15:36:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112407212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:36,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:36,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290370876] [2024-11-18 15:36:36,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:36,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:36,791 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 15:36:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:37,521 INFO L93 Difference]: Finished difference Result 10448 states and 17168 transitions. [2024-11-18 15:36:37,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:37,522 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 15:36:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:37,582 INFO L225 Difference]: With dead ends: 10448 [2024-11-18 15:36:37,582 INFO L226 Difference]: Without dead ends: 7855 [2024-11-18 15:36:37,596 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 15:36:37,597 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:37,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4352 Valid, 16910 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2024-11-18 15:36:37,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 7352. [2024-11-18 15:36:37,925 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 15:36:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 12405 transitions. [2024-11-18 15:36:37,959 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 12405 transitions. Word has length 79 [2024-11-18 15:36:37,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:37,959 INFO L471 AbstractCegarLoop]: Abstraction has 7352 states and 12405 transitions. [2024-11-18 15:36:37,960 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 15:36:37,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 12405 transitions. [2024-11-18 15:36:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:37,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:37,965 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 15:36:37,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:36:37,965 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:37,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 948148294, now seen corresponding path program 1 times [2024-11-18 15:36:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:37,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848175526] [2024-11-18 15:36:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:37,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:38,065 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 15:36:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848175526] [2024-11-18 15:36:38,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848175526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:38,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:38,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:36:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042119744] [2024-11-18 15:36:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:38,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:36:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:36:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:38,069 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 15:36:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:39,036 INFO L93 Difference]: Finished difference Result 18357 states and 31658 transitions. [2024-11-18 15:36:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:36:39,037 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 15:36:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:39,119 INFO L225 Difference]: With dead ends: 18357 [2024-11-18 15:36:39,120 INFO L226 Difference]: Without dead ends: 13137 [2024-11-18 15:36:39,144 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 15:36:39,146 INFO L432 NwaCegarLoop]: 4228 mSDtfsCounter, 4326 mSDsluCounter, 12660 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 15:36:39,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4341 Valid, 16888 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 15:36:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13137 states. [2024-11-18 15:36:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13137 to 12800. [2024-11-18 15:36:40,144 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 15:36:40,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12800 states to 12800 states and 22723 transitions. [2024-11-18 15:36:40,201 INFO L78 Accepts]: Start accepts. Automaton has 12800 states and 22723 transitions. Word has length 79 [2024-11-18 15:36:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:40,201 INFO L471 AbstractCegarLoop]: Abstraction has 12800 states and 22723 transitions. [2024-11-18 15:36:40,202 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 15:36:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 12800 states and 22723 transitions. [2024-11-18 15:36:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-18 15:36:40,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:40,213 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 15:36:40,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:36:40,214 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:40,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:40,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1381877380, now seen corresponding path program 1 times [2024-11-18 15:36:40,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:40,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414217682] [2024-11-18 15:36:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:40,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:40,286 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 15:36:40,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:40,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414217682] [2024-11-18 15:36:40,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414217682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:40,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:36:40,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 15:36:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643388275] [2024-11-18 15:36:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:40,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 15:36:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 15:36:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 15:36:40,290 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 15:36:41,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:41,205 INFO L93 Difference]: Finished difference Result 29247 states and 51750 transitions. [2024-11-18 15:36:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 15:36:41,206 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 15:36:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:41,305 INFO L225 Difference]: With dead ends: 29247 [2024-11-18 15:36:41,305 INFO L226 Difference]: Without dead ends: 18580 [2024-11-18 15:36:41,359 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 15:36:41,360 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 15:36:41,362 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 15:36:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18580 states. [2024-11-18 15:36:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18580 to 17737. [2024-11-18 15:36:42,321 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 15:36:42,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 30396 transitions. [2024-11-18 15:36:42,406 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 30396 transitions. Word has length 79 [2024-11-18 15:36:42,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:42,407 INFO L471 AbstractCegarLoop]: Abstraction has 17737 states and 30396 transitions. [2024-11-18 15:36:42,407 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 15:36:42,408 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 30396 transitions. [2024-11-18 15:36:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:36:42,472 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:42,472 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 15:36:42,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:36:42,473 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:42,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash 372870207, now seen corresponding path program 1 times [2024-11-18 15:36:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:42,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474148843] [2024-11-18 15:36:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:42,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:42,563 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 15:36:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:42,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474148843] [2024-11-18 15:36:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474148843] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:36:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893047511] [2024-11-18 15:36:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:36:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:36:42,567 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 15:36:42,571 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 15:36:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:42,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:36:42,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:36:42,776 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 15:36:42,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:36:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893047511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:42,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:36:42,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:36:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851357616] [2024-11-18 15:36:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:42,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:36:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:36:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:42,781 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 15:36:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:44,046 INFO L93 Difference]: Finished difference Result 48598 states and 83088 transitions. [2024-11-18 15:36:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:36:44,047 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 15:36:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:44,291 INFO L225 Difference]: With dead ends: 48598 [2024-11-18 15:36:44,291 INFO L226 Difference]: Without dead ends: 32994 [2024-11-18 15:36:44,355 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 15:36:44,358 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 15:36:44,358 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 15:36:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32994 states. [2024-11-18 15:36:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32994 to 32796. [2024-11-18 15:36:46,837 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 15:36:46,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32796 states to 32796 states and 55863 transitions. [2024-11-18 15:36:46,987 INFO L78 Accepts]: Start accepts. Automaton has 32796 states and 55863 transitions. Word has length 129 [2024-11-18 15:36:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:46,988 INFO L471 AbstractCegarLoop]: Abstraction has 32796 states and 55863 transitions. [2024-11-18 15:36:46,988 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 15:36:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 32796 states and 55863 transitions. [2024-11-18 15:36:47,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:36:47,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:47,067 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 15:36:47,088 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 15:36:47,268 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 15:36:47,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:47,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1742173535, now seen corresponding path program 1 times [2024-11-18 15:36:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:47,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032655672] [2024-11-18 15:36:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:47,349 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 15:36:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032655672] [2024-11-18 15:36:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032655672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:36:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653030556] [2024-11-18 15:36:47,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:47,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:36:47,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:36:47,352 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 15:36:47,354 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 15:36:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:47,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:36:47,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:36:47,540 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 15:36:47,540 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:36:47,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653030556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:47,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:36:47,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-18 15:36:47,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885542835] [2024-11-18 15:36:47,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:47,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:36:47,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:47,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:36:47,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:47,543 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 15:36:50,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:36:50,396 INFO L93 Difference]: Finished difference Result 93429 states and 159357 transitions. [2024-11-18 15:36:50,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:36:50,397 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 15:36:50,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:36:50,683 INFO L225 Difference]: With dead ends: 93429 [2024-11-18 15:36:50,684 INFO L226 Difference]: Without dead ends: 62766 [2024-11-18 15:36:50,767 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 15:36:50,768 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 15:36:50,768 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 15:36:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62766 states. [2024-11-18 15:36:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62766 to 62372. [2024-11-18 15:36:54,416 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 15:36:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62372 states to 62372 states and 105911 transitions. [2024-11-18 15:36:54,934 INFO L78 Accepts]: Start accepts. Automaton has 62372 states and 105911 transitions. Word has length 129 [2024-11-18 15:36:54,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:36:54,935 INFO L471 AbstractCegarLoop]: Abstraction has 62372 states and 105911 transitions. [2024-11-18 15:36:54,935 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 15:36:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 62372 states and 105911 transitions. [2024-11-18 15:36:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-18 15:36:55,014 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:36:55,015 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 15:36:55,033 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 15:36:55,215 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 15:36:55,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:36:55,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:36:55,217 INFO L85 PathProgramCache]: Analyzing trace with hash 467842687, now seen corresponding path program 1 times [2024-11-18 15:36:55,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:36:55,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122232333] [2024-11-18 15:36:55,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:55,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:36:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:55,301 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 15:36:55,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:36:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122232333] [2024-11-18 15:36:55,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122232333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 15:36:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664316922] [2024-11-18 15:36:55,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:36:55,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 15:36:55,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:36:55,304 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 15:36:55,307 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 15:36:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:36:55,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-18 15:36:55,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 15:36:55,445 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 15:36:55,445 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 15:36:55,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664316922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:36:55,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 15:36:55,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-18 15:36:55,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969829502] [2024-11-18 15:36:55,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:36:55,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:36:55,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:36:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:36:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:36:55,448 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 15:37:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:37:00,413 INFO L93 Difference]: Finished difference Result 180617 states and 309261 transitions. [2024-11-18 15:37:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:37:00,413 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 15:37:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:37:01,150 INFO L225 Difference]: With dead ends: 180617 [2024-11-18 15:37:01,151 INFO L226 Difference]: Without dead ends: 120379 [2024-11-18 15:37:01,267 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 15:37:01,268 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 15:37:01,268 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 15:37:01,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120379 states. [2024-11-18 15:37:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120379 to 120379. [2024-11-18 15:37:08,008 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)