./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254b993103fdf4bf9ce113a41b03b165c45b47461a75aeb8bd9480761428c91e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 15:32:54,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 15:32:54,560 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 15:32:54,567 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 15:32:54,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 15:32:54,594 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 15:32:54,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 15:32:54,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 15:32:54,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 15:32:54,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 15:32:54,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 15:32:54,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 15:32:54,598 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 15:32:54,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 15:32:54,600 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 15:32:54,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 15:32:54,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 15:32:54,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 15:32:54,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 15:32:54,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 15:32:54,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 15:32:54,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 15:32:54,606 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 15:32:54,606 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 15:32:54,606 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 15:32:54,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 15:32:54,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 15:32:54,607 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 15:32:54,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 15:32:54,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 15:32:54,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 15:32:54,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 15:32:54,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:32:54,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 15:32:54,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 15:32:54,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 15:32:54,610 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 15:32:54,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 15:32:54,611 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 15:32:54,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 15:32:54,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 15:32:54,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 15:32:54,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254b993103fdf4bf9ce113a41b03b165c45b47461a75aeb8bd9480761428c91e [2024-11-18 15:32:54,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 15:32:54,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 15:32:54,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 15:32:54,892 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 15:32:54,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 15:32:54,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c [2024-11-18 15:32:56,432 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 15:32:57,120 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 15:32:57,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-2.c [2024-11-18 15:32:57,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1480298/12a594d06433484fb1e7bf0543048677/FLAGbf7aeb5f6 [2024-11-18 15:32:57,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e1480298/12a594d06433484fb1e7bf0543048677 [2024-11-18 15:32:57,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 15:32:57,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 15:32:57,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 15:32:57,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 15:32:57,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 15:32:57,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:57" (1/1) ... [2024-11-18 15:32:57,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68fce10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:32:57, skipping insertion in model container [2024-11-18 15:32:57,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:32:57" (1/1) ... [2024-11-18 15:32:57,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 15:32:59,306 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.06.cil-2.c[378560,378573] [2024-11-18 15:32:59,338 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.06.cil-2.c[383339,383352] [2024-11-18 15:32:59,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:32:59,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 15:33:00,364 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.06.cil-2.c[378560,378573] [2024-11-18 15:33:00,378 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.06.cil-2.c[383339,383352] [2024-11-18 15:33:00,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 15:33:00,504 INFO L204 MainTranslator]: Completed translation [2024-11-18 15:33:00,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00 WrapperNode [2024-11-18 15:33:00,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 15:33:00,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 15:33:00,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 15:33:00,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 15:33:00,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:00,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,036 INFO L138 Inliner]: procedures = 56, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12873 [2024-11-18 15:33:01,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 15:33:01,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 15:33:01,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 15:33:01,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 15:33:01,061 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,428 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 15:33:01,429 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,429 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 15:33:01,841 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 15:33:01,842 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 15:33:01,842 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 15:33:01,843 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (1/1) ... [2024-11-18 15:33:01,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 15:33:01,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 15:33:01,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 15:33:01,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 15:33:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 15:33:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-18 15:33:01,936 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-18 15:33:01,936 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 15:33:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 15:33:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-18 15:33:01,938 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-18 15:33:01,938 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-18 15:33:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-18 15:33:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-18 15:33:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-18 15:33:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-18 15:33:01,939 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-18 15:33:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 15:33:01,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 15:33:01,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 15:33:02,086 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 15:33:02,089 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 15:33:09,928 INFO L? ?]: Removed 1719 outVars from TransFormulas that were not future-live. [2024-11-18 15:33:09,929 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 15:33:10,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 15:33:10,001 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-18 15:33:10,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:33:10 BoogieIcfgContainer [2024-11-18 15:33:10,002 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 15:33:10,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 15:33:10,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 15:33:10,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 15:33:10,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:32:57" (1/3) ... [2024-11-18 15:33:10,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361ec971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:33:10, skipping insertion in model container [2024-11-18 15:33:10,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:33:00" (2/3) ... [2024-11-18 15:33:10,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361ec971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:33:10, skipping insertion in model container [2024-11-18 15:33:10,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:33:10" (3/3) ... [2024-11-18 15:33:10,015 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-2.c [2024-11-18 15:33:10,034 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 15:33:10,034 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 15:33:10,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 15:33:10,186 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;@40d423e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 15:33:10,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 15:33:10,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:33:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:10,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:10,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:10,228 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:10,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:10,236 INFO L85 PathProgramCache]: Analyzing trace with hash -603322071, now seen corresponding path program 1 times [2024-11-18 15:33:10,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:10,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453449057] [2024-11-18 15:33:10,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:10,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453449057] [2024-11-18 15:33:10,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453449057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:10,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 15:33:10,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689328627] [2024-11-18 15:33:10,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:10,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 15:33:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:10,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 15:33:10,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:33:10,743 INFO L87 Difference]: Start difference. First operand has 2422 states, 2393 states have (on average 1.8487254492269118) internal successors, (4424), 2396 states have internal predecessors, (4424), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:10,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:10,950 INFO L93 Difference]: Finished difference Result 4834 states and 8909 transitions. [2024-11-18 15:33:10,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 15:33:10,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:10,988 INFO L225 Difference]: With dead ends: 4834 [2024-11-18 15:33:10,988 INFO L226 Difference]: Without dead ends: 2355 [2024-11-18 15:33:11,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 15:33:11,006 INFO L432 NwaCegarLoop]: 4381 mSDtfsCounter, 350 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 8403 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:11,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 8403 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 15:33:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2024-11-18 15:33:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2024-11-18 15:33:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2327 states have (on average 1.8362698753760207) internal successors, (4273), 2329 states have internal predecessors, (4273), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-18 15:33:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4313 transitions. [2024-11-18 15:33:11,188 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4313 transitions. Word has length 112 [2024-11-18 15:33:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:11,189 INFO L471 AbstractCegarLoop]: Abstraction has 2355 states and 4313 transitions. [2024-11-18 15:33:11,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4313 transitions. [2024-11-18 15:33:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:11,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:11,196 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:11,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 15:33:11,197 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:11,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1634362969, now seen corresponding path program 1 times [2024-11-18 15:33:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717377850] [2024-11-18 15:33:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:11,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:11,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717377850] [2024-11-18 15:33:11,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717377850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:11,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:11,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:11,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057626024] [2024-11-18 15:33:11,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:11,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:11,553 INFO L87 Difference]: Start difference. First operand 2355 states and 4313 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:12,372 INFO L93 Difference]: Finished difference Result 2835 states and 5064 transitions. [2024-11-18 15:33:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:12,389 INFO L225 Difference]: With dead ends: 2835 [2024-11-18 15:33:12,389 INFO L226 Difference]: Without dead ends: 2615 [2024-11-18 15:33:12,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:12,393 INFO L432 NwaCegarLoop]: 4424 mSDtfsCounter, 4603 mSDsluCounter, 13357 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 17781 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:12,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4617 Valid, 17781 Invalid, 734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:12,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2615 states. [2024-11-18 15:33:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2615 to 2585. [2024-11-18 15:33:12,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2532 states have (on average 1.8131911532385465) internal successors, (4591), 2536 states have internal predecessors, (4591), 37 states have call successors, (37), 12 states have call predecessors, (37), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2024-11-18 15:33:12,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 4672 transitions. [2024-11-18 15:33:12,487 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 4672 transitions. Word has length 112 [2024-11-18 15:33:12,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:12,488 INFO L471 AbstractCegarLoop]: Abstraction has 2585 states and 4672 transitions. [2024-11-18 15:33:12,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:12,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 4672 transitions. [2024-11-18 15:33:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:12,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:12,497 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:12,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 15:33:12,498 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:12,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:12,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1041629413, now seen corresponding path program 1 times [2024-11-18 15:33:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:12,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277954293] [2024-11-18 15:33:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277954293] [2024-11-18 15:33:12,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277954293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:12,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:12,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074226216] [2024-11-18 15:33:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:12,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:12,716 INFO L87 Difference]: Start difference. First operand 2585 states and 4672 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:13,381 INFO L93 Difference]: Finished difference Result 3524 states and 6140 transitions. [2024-11-18 15:33:13,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:13,398 INFO L225 Difference]: With dead ends: 3524 [2024-11-18 15:33:13,398 INFO L226 Difference]: Without dead ends: 3076 [2024-11-18 15:33:13,401 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:13,402 INFO L432 NwaCegarLoop]: 4364 mSDtfsCounter, 4599 mSDsluCounter, 13206 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 17570 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:13,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4613 Valid, 17570 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2024-11-18 15:33:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3035. [2024-11-18 15:33:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2936 states have (on average 1.7758855585831064) internal successors, (5214), 2944 states have internal predecessors, (5214), 67 states have call successors, (67), 24 states have call predecessors, (67), 30 states have return successors, (90), 70 states have call predecessors, (90), 67 states have call successors, (90) [2024-11-18 15:33:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 5371 transitions. [2024-11-18 15:33:13,497 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 5371 transitions. Word has length 112 [2024-11-18 15:33:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:13,498 INFO L471 AbstractCegarLoop]: Abstraction has 3035 states and 5371 transitions. [2024-11-18 15:33:13,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 5371 transitions. [2024-11-18 15:33:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:13,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:13,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:13,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 15:33:13,501 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:13,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash 158120423, now seen corresponding path program 1 times [2024-11-18 15:33:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:13,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019714179] [2024-11-18 15:33:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:13,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:13,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:13,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:13,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019714179] [2024-11-18 15:33:13,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019714179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:13,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:13,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:13,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548019633] [2024-11-18 15:33:13,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:13,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:13,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:13,634 INFO L87 Difference]: Start difference. First operand 3035 states and 5371 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:14,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:14,386 INFO L93 Difference]: Finished difference Result 4963 states and 8421 transitions. [2024-11-18 15:33:14,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:14,410 INFO L225 Difference]: With dead ends: 4963 [2024-11-18 15:33:14,410 INFO L226 Difference]: Without dead ends: 4065 [2024-11-18 15:33:14,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:14,416 INFO L432 NwaCegarLoop]: 4416 mSDtfsCounter, 4593 mSDsluCounter, 13321 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4607 SdHoareTripleChecker+Valid, 17737 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:14,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4607 Valid, 17737 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2024-11-18 15:33:14,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4003. [2024-11-18 15:33:14,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3806 states have (on average 1.7277982133473464) internal successors, (6576), 3828 states have internal predecessors, (6576), 127 states have call successors, (127), 48 states have call predecessors, (127), 68 states have return successors, (206), 134 states have call predecessors, (206), 127 states have call successors, (206) [2024-11-18 15:33:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 6909 transitions. [2024-11-18 15:33:14,568 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 6909 transitions. Word has length 112 [2024-11-18 15:33:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:14,569 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 6909 transitions. [2024-11-18 15:33:14,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 6909 transitions. [2024-11-18 15:33:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:14,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:14,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:14,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 15:33:14,573 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:14,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash 129620133, now seen corresponding path program 1 times [2024-11-18 15:33:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:14,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862655198] [2024-11-18 15:33:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:14,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:14,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:14,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862655198] [2024-11-18 15:33:14,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862655198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:14,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:14,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:14,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212774957] [2024-11-18 15:33:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:14,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:14,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:14,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:14,720 INFO L87 Difference]: Start difference. First operand 4003 states and 6909 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:15,417 INFO L93 Difference]: Finished difference Result 8094 states and 13531 transitions. [2024-11-18 15:33:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:15,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:15,450 INFO L225 Difference]: With dead ends: 8094 [2024-11-18 15:33:15,450 INFO L226 Difference]: Without dead ends: 6228 [2024-11-18 15:33:15,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:15,461 INFO L432 NwaCegarLoop]: 4415 mSDtfsCounter, 4588 mSDsluCounter, 13313 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4602 SdHoareTripleChecker+Valid, 17728 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:15,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4602 Valid, 17728 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:15,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6228 states. [2024-11-18 15:33:15,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6228 to 6127. [2024-11-18 15:33:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6127 states, 5716 states have (on average 1.6826452064380686) internal successors, (9618), 5784 states have internal predecessors, (9618), 247 states have call successors, (247), 96 states have call predecessors, (247), 162 states have return successors, (534), 262 states have call predecessors, (534), 247 states have call successors, (534) [2024-11-18 15:33:15,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 10399 transitions. [2024-11-18 15:33:15,694 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 10399 transitions. Word has length 112 [2024-11-18 15:33:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:15,695 INFO L471 AbstractCegarLoop]: Abstraction has 6127 states and 10399 transitions. [2024-11-18 15:33:15,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 10399 transitions. [2024-11-18 15:33:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:15,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:15,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:15,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 15:33:15,701 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:15,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:15,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1810961881, now seen corresponding path program 1 times [2024-11-18 15:33:15,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:15,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27972207] [2024-11-18 15:33:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:15,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:15,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:15,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27972207] [2024-11-18 15:33:15,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27972207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:15,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:15,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:15,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387890484] [2024-11-18 15:33:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:15,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:15,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:15,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:15,846 INFO L87 Difference]: Start difference. First operand 6127 states and 10399 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:16,779 INFO L93 Difference]: Finished difference Result 15049 states and 25389 transitions. [2024-11-18 15:33:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:16,843 INFO L225 Difference]: With dead ends: 15049 [2024-11-18 15:33:16,843 INFO L226 Difference]: Without dead ends: 11059 [2024-11-18 15:33:16,859 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:16,860 INFO L432 NwaCegarLoop]: 4412 mSDtfsCounter, 4583 mSDsluCounter, 13297 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4597 SdHoareTripleChecker+Valid, 17709 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:16,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4597 Valid, 17709 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2024-11-18 15:33:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 10887. [2024-11-18 15:33:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10887 states, 9994 states have (on average 1.6565939563738243) internal successors, (16556), 10208 states have internal predecessors, (16556), 487 states have call successors, (487), 192 states have call predecessors, (487), 404 states have return successors, (1574), 518 states have call predecessors, (1574), 487 states have call successors, (1574) [2024-11-18 15:33:17,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10887 states to 10887 states and 18617 transitions. [2024-11-18 15:33:17,336 INFO L78 Accepts]: Start accepts. Automaton has 10887 states and 18617 transitions. Word has length 112 [2024-11-18 15:33:17,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:17,336 INFO L471 AbstractCegarLoop]: Abstraction has 10887 states and 18617 transitions. [2024-11-18 15:33:17,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:17,337 INFO L276 IsEmpty]: Start isEmpty. Operand 10887 states and 18617 transitions. [2024-11-18 15:33:17,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:17,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:17,346 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:17,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 15:33:17,346 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:17,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash 66101349, now seen corresponding path program 1 times [2024-11-18 15:33:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:17,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155148714] [2024-11-18 15:33:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:17,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:17,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155148714] [2024-11-18 15:33:17,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155148714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:17,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:17,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089793843] [2024-11-18 15:33:17,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:17,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:17,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:17,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:17,478 INFO L87 Difference]: Start difference. First operand 10887 states and 18617 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:18,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:18,654 INFO L93 Difference]: Finished difference Result 30832 states and 54099 transitions. [2024-11-18 15:33:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:18,790 INFO L225 Difference]: With dead ends: 30832 [2024-11-18 15:33:18,791 INFO L226 Difference]: Without dead ends: 22082 [2024-11-18 15:33:18,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:18,835 INFO L432 NwaCegarLoop]: 4409 mSDtfsCounter, 4578 mSDsluCounter, 13284 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 17693 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:18,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 17693 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 15:33:18,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2024-11-18 15:33:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 21783. [2024-11-18 15:33:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21783 states, 19764 states have (on average 1.653612629022465) internal successors, (32682), 20432 states have internal predecessors, (32682), 967 states have call successors, (967), 384 states have call predecessors, (967), 1050 states have return successors, (5190), 1030 states have call predecessors, (5190), 967 states have call successors, (5190) [2024-11-18 15:33:20,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21783 states to 21783 states and 38839 transitions. [2024-11-18 15:33:20,138 INFO L78 Accepts]: Start accepts. Automaton has 21783 states and 38839 transitions. Word has length 112 [2024-11-18 15:33:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:20,139 INFO L471 AbstractCegarLoop]: Abstraction has 21783 states and 38839 transitions. [2024-11-18 15:33:20,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 21783 states and 38839 transitions. [2024-11-18 15:33:20,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:20,157 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:20,157 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:20,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 15:33:20,158 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:20,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash -704632217, now seen corresponding path program 1 times [2024-11-18 15:33:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817709610] [2024-11-18 15:33:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:20,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:20,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:20,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817709610] [2024-11-18 15:33:20,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817709610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:20,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:20,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:20,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97825315] [2024-11-18 15:33:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:20,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:20,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:20,310 INFO L87 Difference]: Start difference. First operand 21783 states and 38839 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:22,719 INFO L93 Difference]: Finished difference Result 70395 states and 131730 transitions. [2024-11-18 15:33:22,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:22,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:22,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:23,039 INFO L225 Difference]: With dead ends: 70395 [2024-11-18 15:33:23,039 INFO L226 Difference]: Without dead ends: 50749 [2024-11-18 15:33:23,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:23,141 INFO L432 NwaCegarLoop]: 4405 mSDtfsCounter, 4767 mSDsluCounter, 13261 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4788 SdHoareTripleChecker+Valid, 17666 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:23,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4788 Valid, 17666 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:23,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2024-11-18 15:33:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 47027. [2024-11-18 15:33:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47027 states, 42334 states have (on average 1.6677847592951291) internal successors, (70604), 44396 states have internal predecessors, (70604), 1863 states have call successors, (1863), 768 states have call predecessors, (1863), 2828 states have return successors, (18502), 1990 states have call predecessors, (18502), 1863 states have call successors, (18502) [2024-11-18 15:33:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47027 states to 47027 states and 90969 transitions. [2024-11-18 15:33:26,064 INFO L78 Accepts]: Start accepts. Automaton has 47027 states and 90969 transitions. Word has length 112 [2024-11-18 15:33:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:26,065 INFO L471 AbstractCegarLoop]: Abstraction has 47027 states and 90969 transitions. [2024-11-18 15:33:26,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47027 states and 90969 transitions. [2024-11-18 15:33:26,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:26,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:26,090 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:26,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 15:33:26,091 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:26,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:26,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1699325915, now seen corresponding path program 1 times [2024-11-18 15:33:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068552420] [2024-11-18 15:33:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:26,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:26,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:26,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:26,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068552420] [2024-11-18 15:33:26,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068552420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:26,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:26,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:26,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301441301] [2024-11-18 15:33:26,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:26,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:26,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:26,224 INFO L87 Difference]: Start difference. First operand 47027 states and 90969 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:31,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:31,054 INFO L93 Difference]: Finished difference Result 154887 states and 325330 transitions. [2024-11-18 15:33:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:31,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:31,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 15:33:31,923 INFO L225 Difference]: With dead ends: 154887 [2024-11-18 15:33:31,923 INFO L226 Difference]: Without dead ends: 109997 [2024-11-18 15:33:32,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 15:33:32,305 INFO L432 NwaCegarLoop]: 4402 mSDtfsCounter, 4699 mSDsluCounter, 13241 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4720 SdHoareTripleChecker+Valid, 17643 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 15:33:32,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4720 Valid, 17643 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 15:33:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109997 states. [2024-11-18 15:33:39,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109997 to 104613. [2024-11-18 15:33:40,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104613 states, 93178 states have (on average 1.6791731953894695) internal successors, (156462), 99486 states have internal predecessors, (156462), 3591 states have call successors, (3591), 1536 states have call predecessors, (3591), 7842 states have return successors, (69638), 3846 states have call predecessors, (69638), 3591 states have call successors, (69638) [2024-11-18 15:33:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104613 states to 104613 states and 229691 transitions. [2024-11-18 15:33:41,364 INFO L78 Accepts]: Start accepts. Automaton has 104613 states and 229691 transitions. Word has length 112 [2024-11-18 15:33:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 15:33:41,364 INFO L471 AbstractCegarLoop]: Abstraction has 104613 states and 229691 transitions. [2024-11-18 15:33:41,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:41,365 INFO L276 IsEmpty]: Start isEmpty. Operand 104613 states and 229691 transitions. [2024-11-18 15:33:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-18 15:33:41,422 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 15:33:41,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 15:33:41,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 15:33:41,422 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 15:33:41,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 15:33:41,423 INFO L85 PathProgramCache]: Analyzing trace with hash 637066595, now seen corresponding path program 1 times [2024-11-18 15:33:41,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 15:33:41,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848370342] [2024-11-18 15:33:41,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 15:33:41,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 15:33:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 15:33:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 15:33:41,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 15:33:41,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848370342] [2024-11-18 15:33:41,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848370342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 15:33:41,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 15:33:41,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 15:33:41,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799673958] [2024-11-18 15:33:41,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 15:33:41,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 15:33:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 15:33:41,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 15:33:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 15:33:41,567 INFO L87 Difference]: Start difference. First operand 104613 states and 229691 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 15:33:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 15:33:51,845 INFO L93 Difference]: Finished difference Result 350268 states and 870836 transitions. [2024-11-18 15:33:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 15:33:51,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-18 15:33:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted.