./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_label42+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e28c81ffc5a1b93c1edca1581014bee1ba1c062c6df3b7a8a783721ae21bc12 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 16:27:15,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:27:15,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:27:15,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:27:15,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:27:15,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:27:15,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:27:15,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:27:15,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:27:15,927 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:27:15,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:27:15,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:27:15,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:27:15,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:27:15,929 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:27:15,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:27:15,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:27:15,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:27:15,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:27:15,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:27:15,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:27:15,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:27:15,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:27:15,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:27:15,931 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:27:15,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:27:15,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:27:15,932 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:27:15,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:27:15,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:27:15,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:27:15,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:27:15,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:27:15,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:27:15,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:27:15,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:27:15,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:27:15,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:27:15,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:27:15,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:27:15,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:27:15,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:27:15,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e28c81ffc5a1b93c1edca1581014bee1ba1c062c6df3b7a8a783721ae21bc12 [2024-11-08 16:27:16,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:27:16,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:27:16,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:27:16,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:27:16,164 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:27:16,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c [2024-11-08 16:27:17,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:27:17,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:27:17,871 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.02.cil-1.c [2024-11-08 16:27:17,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1196589/eb52192543f64d81b0c572aee16181c7/FLAG4be67881d [2024-11-08 16:27:17,927 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d1196589/eb52192543f64d81b0c572aee16181c7 [2024-11-08 16:27:17,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:27:17,929 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:27:17,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:27:17,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:27:17,938 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:27:17,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:27:17" (1/1) ... [2024-11-08 16:27:17,940 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@379e8964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:17, skipping insertion in model container [2024-11-08 16:27:17,940 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:27:17" (1/1) ... [2024-11-08 16:27:18,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:27:19,202 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_label42+token_ring.02.cil-1.c[378560,378573] [2024-11-08 16:27:19,227 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_label42+token_ring.02.cil-1.c[383339,383352] [2024-11-08 16:27:19,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:27:19,316 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:27:19,824 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_label42+token_ring.02.cil-1.c[378560,378573] [2024-11-08 16:27:19,830 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_label42+token_ring.02.cil-1.c[383339,383352] [2024-11-08 16:27:19,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:27:19,911 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:27:19,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19 WrapperNode [2024-11-08 16:27:19,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:27:19,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:27:19,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:27:19,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:27:19,920 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:19,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,313 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12633 [2024-11-08 16:27:20,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:27:20,314 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:27:20,314 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:27:20,314 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:27:20,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,508 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]. [2024-11-08 16:27:20,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,626 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,667 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,688 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:27:20,766 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:27:20,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:27:20,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:27:20,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (1/1) ... [2024-11-08 16:27:20,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:27:20,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:20,796 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) [2024-11-08 16:27:20,798 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 [2024-11-08 16:27:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:27:20,834 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-08 16:27:20,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-08 16:27:20,835 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-08 16:27:20,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:27:20,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:27:20,932 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:27:20,934 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:27:26,653 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-08 16:27:26,653 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:27:26,702 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:27:26,703 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 16:27:26,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:27:26 BoogieIcfgContainer [2024-11-08 16:27:26,704 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:27:26,706 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:27:26,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:27:26,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:27:26,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:27:17" (1/3) ... [2024-11-08 16:27:26,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fff41c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:27:26, skipping insertion in model container [2024-11-08 16:27:26,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:27:19" (2/3) ... [2024-11-08 16:27:26,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fff41c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:27:26, skipping insertion in model container [2024-11-08 16:27:26,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:27:26" (3/3) ... [2024-11-08 16:27:26,713 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.02.cil-1.c [2024-11-08 16:27:26,725 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:27:26,725 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:27:26,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:27:26,808 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;@5019b6aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:27:26,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-08 16:27:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-08 16:27:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:26,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:26,826 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] [2024-11-08 16:27:26,827 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:26,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -257117409, now seen corresponding path program 1 times [2024-11-08 16:27:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994226414] [2024-11-08 16:27:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994226414] [2024-11-08 16:27:27,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994226414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:27,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:27,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:27:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016234009] [2024-11-08 16:27:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:27,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:27:27,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:27,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:27:27,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:27:27,298 INFO L87 Difference]: Start difference. First operand has 2318 states, 2293 states have (on average 1.8560837331007414) internal successors, (4256), 2296 states have internal predecessors, (4256), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:28,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:28,086 INFO L93 Difference]: Finished difference Result 4811 states and 8854 transitions. [2024-11-08 16:27:28,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:27:28,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:28,113 INFO L225 Difference]: With dead ends: 4811 [2024-11-08 16:27:28,114 INFO L226 Difference]: Without dead ends: 2433 [2024-11-08 16:27:28,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-08 16:27:28,127 INFO L432 NwaCegarLoop]: 4145 mSDtfsCounter, 4439 mSDsluCounter, 12417 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 16562 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:28,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4448 Valid, 16562 Invalid, 654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2024-11-08 16:27:28,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2370. [2024-11-08 16:27:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 2328 states have (on average 1.8311855670103092) internal successors, (4263), 2331 states have internal predecessors, (4263), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-08 16:27:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 4320 transitions. [2024-11-08 16:27:28,238 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 4320 transitions. Word has length 68 [2024-11-08 16:27:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:28,238 INFO L471 AbstractCegarLoop]: Abstraction has 2370 states and 4320 transitions. [2024-11-08 16:27:28,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 4320 transitions. [2024-11-08 16:27:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:28,243 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:28,244 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] [2024-11-08 16:27:28,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:27:28,244 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:28,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:28,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1270216611, now seen corresponding path program 1 times [2024-11-08 16:27:28,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:28,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637583606] [2024-11-08 16:27:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:28,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:28,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:28,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:28,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637583606] [2024-11-08 16:27:28,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637583606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:28,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:28,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:27:28,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474047631] [2024-11-08 16:27:28,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:28,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:27:28,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:28,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:27:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:27:28,414 INFO L87 Difference]: Start difference. First operand 2370 states and 4320 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:29,168 INFO L93 Difference]: Finished difference Result 2822 states and 4989 transitions. [2024-11-08 16:27:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:27:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:29,181 INFO L225 Difference]: With dead ends: 2822 [2024-11-08 16:27:29,181 INFO L226 Difference]: Without dead ends: 2583 [2024-11-08 16:27:29,182 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:27:29,183 INFO L432 NwaCegarLoop]: 4156 mSDtfsCounter, 4367 mSDsluCounter, 16454 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4376 SdHoareTripleChecker+Valid, 20610 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:29,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4376 Valid, 20610 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:27:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2024-11-08 16:27:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2482. [2024-11-08 16:27:29,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 2422 states have (on average 1.8158546655656482) internal successors, (4398), 2426 states have internal predecessors, (4398), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (43), 39 states have call predecessors, (43), 38 states have call successors, (43) [2024-11-08 16:27:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 4479 transitions. [2024-11-08 16:27:29,299 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 4479 transitions. Word has length 68 [2024-11-08 16:27:29,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:29,299 INFO L471 AbstractCegarLoop]: Abstraction has 2482 states and 4479 transitions. [2024-11-08 16:27:29,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 4479 transitions. [2024-11-08 16:27:29,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:29,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:29,301 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] [2024-11-08 16:27:29,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:27:29,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:29,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2146235617, now seen corresponding path program 1 times [2024-11-08 16:27:29,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:29,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868710109] [2024-11-08 16:27:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:29,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868710109] [2024-11-08 16:27:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868710109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:29,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:27:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677242203] [2024-11-08 16:27:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:29,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:27:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:27:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:27:29,417 INFO L87 Difference]: Start difference. First operand 2482 states and 4479 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:30,097 INFO L93 Difference]: Finished difference Result 3217 states and 5562 transitions. [2024-11-08 16:27:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:27:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:30,107 INFO L225 Difference]: With dead ends: 3217 [2024-11-08 16:27:30,108 INFO L226 Difference]: Without dead ends: 2866 [2024-11-08 16:27:30,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-08 16:27:30,110 INFO L432 NwaCegarLoop]: 4085 mSDtfsCounter, 4405 mSDsluCounter, 16264 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 20349 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:30,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4414 Valid, 20349 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2024-11-08 16:27:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 2707. [2024-11-08 16:27:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2611 states have (on average 1.7882037533512065) internal successors, (4669), 2617 states have internal predecessors, (4669), 60 states have call successors, (60), 30 states have call predecessors, (60), 34 states have return successors, (73), 63 states have call predecessors, (73), 60 states have call successors, (73) [2024-11-08 16:27:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4802 transitions. [2024-11-08 16:27:30,166 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4802 transitions. Word has length 68 [2024-11-08 16:27:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:30,167 INFO L471 AbstractCegarLoop]: Abstraction has 2707 states and 4802 transitions. [2024-11-08 16:27:30,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4802 transitions. [2024-11-08 16:27:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:30,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:30,168 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] [2024-11-08 16:27:30,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:27:30,169 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:30,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1704831005, now seen corresponding path program 1 times [2024-11-08 16:27:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:30,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563588900] [2024-11-08 16:27:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:30,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563588900] [2024-11-08 16:27:30,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563588900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:30,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:30,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:27:30,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639873265] [2024-11-08 16:27:30,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:30,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:27:30,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:27:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:27:30,263 INFO L87 Difference]: Start difference. First operand 2707 states and 4802 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:31,067 INFO L93 Difference]: Finished difference Result 4079 states and 6811 transitions. [2024-11-08 16:27:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:27:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:31,081 INFO L225 Difference]: With dead ends: 4079 [2024-11-08 16:27:31,082 INFO L226 Difference]: Without dead ends: 3503 [2024-11-08 16:27:31,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:27:31,084 INFO L432 NwaCegarLoop]: 4151 mSDtfsCounter, 4377 mSDsluCounter, 16443 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4385 SdHoareTripleChecker+Valid, 20594 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:31,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4385 Valid, 20594 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:27:31,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3503 states. [2024-11-08 16:27:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3503 to 3131. [2024-11-08 16:27:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3131 states, 2967 states have (on average 1.7462082912032355) internal successors, (5181), 2977 states have internal predecessors, (5181), 100 states have call successors, (100), 54 states have call predecessors, (100), 62 states have return successors, (135), 107 states have call predecessors, (135), 100 states have call successors, (135) [2024-11-08 16:27:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 5416 transitions. [2024-11-08 16:27:31,171 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 5416 transitions. Word has length 68 [2024-11-08 16:27:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:31,172 INFO L471 AbstractCegarLoop]: Abstraction has 3131 states and 5416 transitions. [2024-11-08 16:27:31,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 5416 transitions. [2024-11-08 16:27:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:31,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:31,173 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] [2024-11-08 16:27:31,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:27:31,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:31,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 561550181, now seen corresponding path program 1 times [2024-11-08 16:27:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59669808] [2024-11-08 16:27:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:31,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59669808] [2024-11-08 16:27:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59669808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:31,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:31,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 16:27:31,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511559570] [2024-11-08 16:27:31,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:31,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:27:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:27:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:27:31,277 INFO L87 Difference]: Start difference. First operand 3131 states and 5416 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:32,121 INFO L93 Difference]: Finished difference Result 5513 states and 8887 transitions. [2024-11-08 16:27:32,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 16:27:32,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:32,135 INFO L225 Difference]: With dead ends: 5513 [2024-11-08 16:27:32,136 INFO L226 Difference]: Without dead ends: 4513 [2024-11-08 16:27:32,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 16:27:32,139 INFO L432 NwaCegarLoop]: 4152 mSDtfsCounter, 4379 mSDsluCounter, 16446 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4391 SdHoareTripleChecker+Valid, 20598 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:32,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4391 Valid, 20598 Invalid, 949 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:32,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2024-11-08 16:27:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3992. [2024-11-08 16:27:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3696 states have (on average 1.6869588744588744) internal successors, (6235), 3714 states have internal predecessors, (6235), 176 states have call successors, (176), 102 states have call predecessors, (176), 118 states have return successors, (273), 191 states have call predecessors, (273), 176 states have call successors, (273) [2024-11-08 16:27:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 6684 transitions. [2024-11-08 16:27:32,251 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 6684 transitions. Word has length 68 [2024-11-08 16:27:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:32,252 INFO L471 AbstractCegarLoop]: Abstraction has 3992 states and 6684 transitions. [2024-11-08 16:27:32,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 6684 transitions. [2024-11-08 16:27:32,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 16:27:32,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:32,254 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] [2024-11-08 16:27:32,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:27:32,255 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:32,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:32,255 INFO L85 PathProgramCache]: Analyzing trace with hash 80469923, now seen corresponding path program 1 times [2024-11-08 16:27:32,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:32,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983134959] [2024-11-08 16:27:32,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:32,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:27:32,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:32,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983134959] [2024-11-08 16:27:32,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983134959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:32,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:27:32,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 16:27:32,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774902206] [2024-11-08 16:27:32,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:32,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 16:27:32,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:32,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 16:27:32,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 16:27:32,335 INFO L87 Difference]: Start difference. First operand 3992 states and 6684 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:33,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:33,011 INFO L93 Difference]: Finished difference Result 7407 states and 11705 transitions. [2024-11-08 16:27:33,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 16:27:33,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2024-11-08 16:27:33,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:33,029 INFO L225 Difference]: With dead ends: 7407 [2024-11-08 16:27:33,029 INFO L226 Difference]: Without dead ends: 5547 [2024-11-08 16:27:33,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-08 16:27:33,038 INFO L432 NwaCegarLoop]: 4178 mSDtfsCounter, 4509 mSDsluCounter, 12260 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4534 SdHoareTripleChecker+Valid, 16438 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:33,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4534 Valid, 16438 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 16:27:33,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2024-11-08 16:27:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 4960. [2024-11-08 16:27:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4506 states have (on average 1.6344873501997337) internal successors, (7365), 4541 states have internal predecessors, (7365), 272 states have call successors, (272), 156 states have call predecessors, (272), 180 states have return successors, (397), 278 states have call predecessors, (397), 272 states have call successors, (397) [2024-11-08 16:27:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 8034 transitions. [2024-11-08 16:27:33,174 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 8034 transitions. Word has length 68 [2024-11-08 16:27:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:33,174 INFO L471 AbstractCegarLoop]: Abstraction has 4960 states and 8034 transitions. [2024-11-08 16:27:33,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-08 16:27:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 8034 transitions. [2024-11-08 16:27:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 16:27:33,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:33,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:33,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:27:33,180 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:33,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash -855841062, now seen corresponding path program 1 times [2024-11-08 16:27:33,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59816511] [2024-11-08 16:27:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:33,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:33,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 16:27:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:27:33,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:33,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59816511] [2024-11-08 16:27:33,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59816511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:33,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144119728] [2024-11-08 16:27:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:33,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:33,288 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) [2024-11-08 16:27:33,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:27:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:33,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:33,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-08 16:27:33,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:33,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144119728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:33,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:33,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:27:33,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707486828] [2024-11-08 16:27:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:33,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:33,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:33,421 INFO L87 Difference]: Start difference. First operand 4960 states and 8034 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2024-11-08 16:27:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:33,642 INFO L93 Difference]: Finished difference Result 10473 states and 16024 transitions. [2024-11-08 16:27:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:33,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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 111 [2024-11-08 16:27:33,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:33,667 INFO L225 Difference]: With dead ends: 10473 [2024-11-08 16:27:33,668 INFO L226 Difference]: Without dead ends: 7645 [2024-11-08 16:27:33,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:33,681 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4101 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 4304 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 [2024-11-08 16:27:33,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 4304 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:33,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2024-11-08 16:27:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 7591. [2024-11-08 16:27:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7591 states, 6723 states have (on average 1.5650751152759186) internal successors, (10522), 6791 states have internal predecessors, (10522), 510 states have call successors, (510), 308 states have call predecessors, (510), 356 states have return successors, (745), 507 states have call predecessors, (745), 510 states have call successors, (745) [2024-11-08 16:27:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 11777 transitions. [2024-11-08 16:27:33,907 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 11777 transitions. Word has length 111 [2024-11-08 16:27:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:33,909 INFO L471 AbstractCegarLoop]: Abstraction has 7591 states and 11777 transitions. [2024-11-08 16:27:33,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 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) [2024-11-08 16:27:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 11777 transitions. [2024-11-08 16:27:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-08 16:27:33,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:33,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:33,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:27:34,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:34,117 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:34,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:34,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1748397894, now seen corresponding path program 1 times [2024-11-08 16:27:34,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:34,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296976732] [2024-11-08 16:27:34,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:34,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:34,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-11-08 16:27:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-08 16:27:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296976732] [2024-11-08 16:27:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296976732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62572368] [2024-11-08 16:27:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:34,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:34,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:34,206 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) [2024-11-08 16:27:34,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:27:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:34,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:34,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 16:27:34,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:34,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62572368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:34,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122361411] [2024-11-08 16:27:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:34,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:34,297 INFO L87 Difference]: Start difference. First operand 7591 states and 11777 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-08 16:27:34,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:34,830 INFO L93 Difference]: Finished difference Result 18185 states and 27229 transitions. [2024-11-08 16:27:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:34,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 111 [2024-11-08 16:27:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:34,876 INFO L225 Difference]: With dead ends: 18185 [2024-11-08 16:27:34,877 INFO L226 Difference]: Without dead ends: 12727 [2024-11-08 16:27:34,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:34,895 INFO L432 NwaCegarLoop]: 4304 mSDtfsCounter, 156 mSDsluCounter, 4140 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 8444 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 [2024-11-08 16:27:34,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 8444 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12727 states. [2024-11-08 16:27:35,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12727 to 12727. [2024-11-08 16:27:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12727 states, 11046 states have (on average 1.5039833423863842) internal successors, (16613), 11163 states have internal predecessors, (16613), 975 states have call successors, (975), 608 states have call predecessors, (975), 704 states have return successors, (1596), 987 states have call predecessors, (1596), 975 states have call successors, (1596) [2024-11-08 16:27:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12727 states to 12727 states and 19184 transitions. [2024-11-08 16:27:35,515 INFO L78 Accepts]: Start accepts. Automaton has 12727 states and 19184 transitions. Word has length 111 [2024-11-08 16:27:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:35,516 INFO L471 AbstractCegarLoop]: Abstraction has 12727 states and 19184 transitions. [2024-11-08 16:27:35,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-08 16:27:35,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12727 states and 19184 transitions. [2024-11-08 16:27:35,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-08 16:27:35,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:35,539 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:35,553 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:27:35,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-08 16:27:35,740 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:35,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash 508044484, now seen corresponding path program 1 times [2024-11-08 16:27:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:35,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206109670] [2024-11-08 16:27:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-08 16:27:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-11-08 16:27:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-08 16:27:35,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206109670] [2024-11-08 16:27:35,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206109670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:35,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215223589] [2024-11-08 16:27:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:35,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:35,832 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) [2024-11-08 16:27:35,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:27:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:35,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:35,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 16:27:36,015 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215223589] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:36,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:36,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2024-11-08 16:27:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504045702] [2024-11-08 16:27:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:36,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:36,017 INFO L87 Difference]: Start difference. First operand 12727 states and 19184 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 16:27:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:36,695 INFO L93 Difference]: Finished difference Result 33475 states and 49297 transitions. [2024-11-08 16:27:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 144 [2024-11-08 16:27:36,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:36,761 INFO L225 Difference]: With dead ends: 33475 [2024-11-08 16:27:36,761 INFO L226 Difference]: Without dead ends: 22885 [2024-11-08 16:27:36,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:36,793 INFO L432 NwaCegarLoop]: 4145 mSDtfsCounter, 4058 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4058 SdHoareTripleChecker+Valid, 4307 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 [2024-11-08 16:27:36,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4058 Valid, 4307 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:36,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22885 states. [2024-11-08 16:27:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22885 to 22675. [2024-11-08 16:27:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22675 states, 19414 states have (on average 1.4625012877305037) internal successors, (28393), 19645 states have internal predecessors, (28393), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1390 states have return successors, (3038), 1863 states have call predecessors, (3038), 1869 states have call successors, (3038) [2024-11-08 16:27:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22675 states to 22675 states and 33300 transitions. [2024-11-08 16:27:37,653 INFO L78 Accepts]: Start accepts. Automaton has 22675 states and 33300 transitions. Word has length 144 [2024-11-08 16:27:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:37,654 INFO L471 AbstractCegarLoop]: Abstraction has 22675 states and 33300 transitions. [2024-11-08 16:27:37,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-08 16:27:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 22675 states and 33300 transitions. [2024-11-08 16:27:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-08 16:27:37,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:37,693 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2024-11-08 16:27:37,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:27:37,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:37,894 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:37,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash 663714365, now seen corresponding path program 1 times [2024-11-08 16:27:37,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:37,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089577271] [2024-11-08 16:27:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:37,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 16:27:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 16:27:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 16:27:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:37,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-08 16:27:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 16:27:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089577271] [2024-11-08 16:27:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089577271] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611842336] [2024-11-08 16:27:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:38,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:38,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:38,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:38,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:27:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:38,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:38,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-08 16:27:38,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611842336] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349676620] [2024-11-08 16:27:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:38,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:38,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:38,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:38,148 INFO L87 Difference]: Start difference. First operand 22675 states and 33300 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 16:27:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:38,793 INFO L93 Difference]: Finished difference Result 36401 states and 53409 transitions. [2024-11-08 16:27:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2024-11-08 16:27:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:38,849 INFO L225 Difference]: With dead ends: 36401 [2024-11-08 16:27:38,849 INFO L226 Difference]: Without dead ends: 20297 [2024-11-08 16:27:38,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:38,885 INFO L432 NwaCegarLoop]: 4142 mSDtfsCounter, 4094 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:38,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 4176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20297 states. [2024-11-08 16:27:39,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20297 to 15281. [2024-11-08 16:27:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 13228 states have (on average 1.4423193226489266) internal successors, (19079), 13349 states have internal predecessors, (19079), 1161 states have call successors, (1161), 794 states have call predecessors, (1161), 890 states have return successors, (1648), 1153 states have call predecessors, (1648), 1161 states have call successors, (1648) [2024-11-08 16:27:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 21888 transitions. [2024-11-08 16:27:39,702 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 21888 transitions. Word has length 162 [2024-11-08 16:27:39,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:39,702 INFO L471 AbstractCegarLoop]: Abstraction has 15281 states and 21888 transitions. [2024-11-08 16:27:39,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 16:27:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 21888 transitions. [2024-11-08 16:27:39,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-08 16:27:39,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:39,725 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:39,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:27:39,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:39,930 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:39,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:39,931 INFO L85 PathProgramCache]: Analyzing trace with hash -781315429, now seen corresponding path program 1 times [2024-11-08 16:27:39,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:39,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586329595] [2024-11-08 16:27:39,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:39,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:39,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-08 16:27:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-08 16:27:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 16:27:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-11-08 16:27:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 16:27:40,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586329595] [2024-11-08 16:27:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586329595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669152043] [2024-11-08 16:27:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:40,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:40,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:40,069 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:40,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:27:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:40,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:27:40,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 16:27:40,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:40,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669152043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:40,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:40,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754634658] [2024-11-08 16:27:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:40,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:40,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:40,212 INFO L87 Difference]: Start difference. First operand 15281 states and 21888 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:27:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:41,044 INFO L93 Difference]: Finished difference Result 25378 states and 35603 transitions. [2024-11-08 16:27:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 162 [2024-11-08 16:27:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:41,099 INFO L225 Difference]: With dead ends: 25378 [2024-11-08 16:27:41,099 INFO L226 Difference]: Without dead ends: 16237 [2024-11-08 16:27:41,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:41,122 INFO L432 NwaCegarLoop]: 4179 mSDtfsCounter, 4088 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:41,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 4348 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16237 states. [2024-11-08 16:27:41,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16237 to 16171. [2024-11-08 16:27:41,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16171 states, 14030 states have (on average 1.4168923734853884) internal successors, (19879), 14151 states have internal predecessors, (19879), 1183 states have call successors, (1183), 860 states have call predecessors, (1183), 956 states have return successors, (1736), 1175 states have call predecessors, (1736), 1183 states have call successors, (1736) [2024-11-08 16:27:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 22798 transitions. [2024-11-08 16:27:41,824 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 22798 transitions. Word has length 162 [2024-11-08 16:27:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:41,824 INFO L471 AbstractCegarLoop]: Abstraction has 16171 states and 22798 transitions. [2024-11-08 16:27:41,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:27:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 22798 transitions. [2024-11-08 16:27:41,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-08 16:27:41,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:41,840 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:41,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 16:27:42,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:27:42,044 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:42,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:42,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2057783295, now seen corresponding path program 1 times [2024-11-08 16:27:42,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:42,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919385416] [2024-11-08 16:27:42,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-08 16:27:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-08 16:27:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 16:27:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,156 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 16:27:42,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919385416] [2024-11-08 16:27:42,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919385416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:42,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523424660] [2024-11-08 16:27:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:42,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:42,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:42,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:42,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:27:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:42,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:42,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 16:27:42,274 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523424660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:42,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11624728] [2024-11-08 16:27:42,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:42,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:42,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:42,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:42,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:42,275 INFO L87 Difference]: Start difference. First operand 16171 states and 22798 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 16:27:43,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:43,183 INFO L93 Difference]: Finished difference Result 43327 states and 59768 transitions. [2024-11-08 16:27:43,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:43,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2024-11-08 16:27:43,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:43,248 INFO L225 Difference]: With dead ends: 43327 [2024-11-08 16:27:43,249 INFO L226 Difference]: Without dead ends: 29295 [2024-11-08 16:27:43,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:43,269 INFO L432 NwaCegarLoop]: 4299 mSDtfsCounter, 144 mSDsluCounter, 4136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 8435 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 [2024-11-08 16:27:43,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 8435 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:43,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29295 states. [2024-11-08 16:27:44,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29295 to 29249. [2024-11-08 16:27:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29249 states, 25150 states have (on average 1.3727634194831013) internal successors, (34525), 25391 states have internal predecessors, (34525), 2245 states have call successors, (2245), 1660 states have call predecessors, (2245), 1852 states have return successors, (3798), 2229 states have call predecessors, (3798), 2245 states have call successors, (3798) [2024-11-08 16:27:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29249 states to 29249 states and 40568 transitions. [2024-11-08 16:27:44,351 INFO L78 Accepts]: Start accepts. Automaton has 29249 states and 40568 transitions. Word has length 163 [2024-11-08 16:27:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:44,352 INFO L471 AbstractCegarLoop]: Abstraction has 29249 states and 40568 transitions. [2024-11-08 16:27:44,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 16:27:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 29249 states and 40568 transitions. [2024-11-08 16:27:44,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-08 16:27:44,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:44,382 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:44,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:27:44,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:44,674 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:44,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 373119872, now seen corresponding path program 1 times [2024-11-08 16:27:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:44,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075668782] [2024-11-08 16:27:44,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:44,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-08 16:27:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 16:27:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 16:27:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 16:27:44,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075668782] [2024-11-08 16:27:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075668782] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340795241] [2024-11-08 16:27:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:44,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:44,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:44,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:27:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:44,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:44,883 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:27:44,957 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340795241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:44,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457539455] [2024-11-08 16:27:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:44,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:44,959 INFO L87 Difference]: Start difference. First operand 29249 states and 40568 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 16:27:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:45,904 INFO L93 Difference]: Finished difference Result 57681 states and 80264 transitions. [2024-11-08 16:27:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 163 [2024-11-08 16:27:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:45,988 INFO L225 Difference]: With dead ends: 57681 [2024-11-08 16:27:45,988 INFO L226 Difference]: Without dead ends: 30571 [2024-11-08 16:27:46,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:46,043 INFO L432 NwaCegarLoop]: 4136 mSDtfsCounter, 4071 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4071 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:46,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4071 Valid, 4169 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:46,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30571 states. [2024-11-08 16:27:47,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30571 to 30527. [2024-11-08 16:27:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30527 states, 26368 states have (on average 1.3315761529126213) internal successors, (35111), 26609 states have internal predecessors, (35111), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 1912 states have return successors, (3754), 2229 states have call predecessors, (3754), 2245 states have call successors, (3754) [2024-11-08 16:27:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30527 states to 30527 states and 41110 transitions. [2024-11-08 16:27:47,864 INFO L78 Accepts]: Start accepts. Automaton has 30527 states and 41110 transitions. Word has length 163 [2024-11-08 16:27:47,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:47,864 INFO L471 AbstractCegarLoop]: Abstraction has 30527 states and 41110 transitions. [2024-11-08 16:27:47,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-08 16:27:47,864 INFO L276 IsEmpty]: Start isEmpty. Operand 30527 states and 41110 transitions. [2024-11-08 16:27:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-08 16:27:47,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:47,894 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:47,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 16:27:48,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:48,095 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:48,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash 790570081, now seen corresponding path program 1 times [2024-11-08 16:27:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594267120] [2024-11-08 16:27:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-08 16:27:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-11-08 16:27:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-11-08 16:27:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-11-08 16:27:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-08 16:27:48,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:48,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594267120] [2024-11-08 16:27:48,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594267120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299820025] [2024-11-08 16:27:48,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:48,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:48,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:48,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:48,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:27:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:48,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:27:48,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-08 16:27:48,292 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:48,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299820025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:48,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:48,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:48,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875591052] [2024-11-08 16:27:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:48,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:48,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:48,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:48,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:48,294 INFO L87 Difference]: Start difference. First operand 30527 states and 41110 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 16:27:50,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:50,080 INFO L93 Difference]: Finished difference Result 83033 states and 111042 transitions. [2024-11-08 16:27:50,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:50,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 163 [2024-11-08 16:27:50,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:50,411 INFO L225 Difference]: With dead ends: 83033 [2024-11-08 16:27:50,412 INFO L226 Difference]: Without dead ends: 54653 [2024-11-08 16:27:50,447 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:50,447 INFO L432 NwaCegarLoop]: 4297 mSDtfsCounter, 149 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 8432 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 [2024-11-08 16:27:50,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 8432 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:50,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54653 states. [2024-11-08 16:27:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54653 to 54651. [2024-11-08 16:27:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54651 states, 46784 states have (on average 1.2991834815321477) internal successors, (60781), 47265 states have internal predecessors, (60781), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-08 16:27:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54651 states to 54651 states and 73246 transitions. [2024-11-08 16:27:52,796 INFO L78 Accepts]: Start accepts. Automaton has 54651 states and 73246 transitions. Word has length 163 [2024-11-08 16:27:52,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:52,797 INFO L471 AbstractCegarLoop]: Abstraction has 54651 states and 73246 transitions. [2024-11-08 16:27:52,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-08 16:27:52,797 INFO L276 IsEmpty]: Start isEmpty. Operand 54651 states and 73246 transitions. [2024-11-08 16:27:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-08 16:27:52,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:52,845 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:52,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 16:27:53,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 16:27:53,046 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:53,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:53,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1412929672, now seen corresponding path program 1 times [2024-11-08 16:27:53,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:53,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549075588] [2024-11-08 16:27:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:53,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 16:27:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 16:27:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-11-08 16:27:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-08 16:27:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-08 16:27:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549075588] [2024-11-08 16:27:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549075588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076230286] [2024-11-08 16:27:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:53,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:53,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:27:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:53,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:27:53,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-08 16:27:53,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:53,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076230286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:53,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:53,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:53,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186710515] [2024-11-08 16:27:53,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:53,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:53,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:53,267 INFO L87 Difference]: Start difference. First operand 54651 states and 73246 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:27:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:27:56,498 INFO L93 Difference]: Finished difference Result 95855 states and 127872 transitions. [2024-11-08 16:27:56,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:27:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2024-11-08 16:27:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:27:56,832 INFO L225 Difference]: With dead ends: 95855 [2024-11-08 16:27:56,832 INFO L226 Difference]: Without dead ends: 56045 [2024-11-08 16:27:56,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:56,877 INFO L432 NwaCegarLoop]: 4169 mSDtfsCounter, 4094 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:27:56,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4094 Valid, 4333 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:27:56,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56045 states. [2024-11-08 16:27:59,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56045 to 54531. [2024-11-08 16:27:59,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54531 states, 46664 states have (on average 1.290952340133722) internal successors, (60241), 47145 states have internal predecessors, (60241), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 3600 states have return successors, (8200), 4233 states have call predecessors, (8200), 4265 states have call successors, (8200) [2024-11-08 16:27:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54531 states to 54531 states and 72706 transitions. [2024-11-08 16:27:59,216 INFO L78 Accepts]: Start accepts. Automaton has 54531 states and 72706 transitions. Word has length 164 [2024-11-08 16:27:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:27:59,216 INFO L471 AbstractCegarLoop]: Abstraction has 54531 states and 72706 transitions. [2024-11-08 16:27:59,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:27:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 54531 states and 72706 transitions. [2024-11-08 16:27:59,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-08 16:27:59,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:27:59,262 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:27:59,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 16:27:59,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 16:27:59,463 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:27:59,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:27:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1651731176, now seen corresponding path program 1 times [2024-11-08 16:27:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:27:59,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315989934] [2024-11-08 16:27:59,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:59,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:27:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 16:27:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-08 16:27:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-08 16:27:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-08 16:27:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-08 16:27:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-08 16:27:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-08 16:27:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-11-08 16:27:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-08 16:27:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-11-08 16:27:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-08 16:27:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:27:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315989934] [2024-11-08 16:27:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315989934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:27:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485029421] [2024-11-08 16:27:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:27:59,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:27:59,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 16:27:59,560 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:27:59,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:27:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:27:59,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:27:59,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:27:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-08 16:27:59,690 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:27:59,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485029421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:27:59,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:27:59,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-08 16:27:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982558878] [2024-11-08 16:27:59,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:27:59,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:27:59,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:27:59,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:27:59,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:27:59,692 INFO L87 Difference]: Start difference. First operand 54531 states and 72706 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-08 16:28:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:02,690 INFO L93 Difference]: Finished difference Result 95939 states and 127052 transitions. [2024-11-08 16:28:02,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:28:02,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 164 [2024-11-08 16:28:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:02,879 INFO L225 Difference]: With dead ends: 95939 [2024-11-08 16:28:02,880 INFO L226 Difference]: Without dead ends: 55373 [2024-11-08 16:28:02,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 16:28:02,938 INFO L432 NwaCegarLoop]: 4153 mSDtfsCounter, 4095 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4315 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:02,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4315 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:28:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55373 states.