./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/pthread-C-DAC/pthread-demo-datarace-1.i -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 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:21:56,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:21:56,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:21:56,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:21:56,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:21:56,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:21:56,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:21:56,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:21:56,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:21:56,837 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:21:56,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:21:56,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:21:56,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:21:56,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:21:56,840 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:21:56,840 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:21:56,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:21:56,841 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:21:56,841 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:21:56,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:21:56,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:21:56,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:21:56,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:21:56,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:21:56,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:21:56,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:21:56,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:21:56,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:21:56,846 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:21:56,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:21:56,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:21:56,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:21:56,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:21:56,847 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:21:56,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:21:56,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:21:56,849 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:21:56,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81147b3e42a82bd92b2fd1c17836bc41bf8598e66ad2317620561a8ac507fa9a [2024-11-10 10:21:57,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:21:57,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:21:57,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:21:57,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:21:57,068 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:21:57,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-10 10:21:58,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:21:58,513 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:21:58,514 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-1.i [2024-11-10 10:21:58,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb3bfa1c/e5d331669c1b489aafe8ba58870a329f/FLAG31199ac2b [2024-11-10 10:21:58,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cb3bfa1c/e5d331669c1b489aafe8ba58870a329f [2024-11-10 10:21:58,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:21:58,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:21:58,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:21:58,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:21:58,557 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:21:58,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:21:58" (1/1) ... [2024-11-10 10:21:58,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c82748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:58, skipping insertion in model container [2024-11-10 10:21:58,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:21:58" (1/1) ... [2024-11-10 10:21:58,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:21:58,766 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/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-10 10:21:58,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:21:58,988 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:21:58,998 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/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-11-10 10:21:59,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:21:59,092 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:21:59,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59 WrapperNode [2024-11-10 10:21:59,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:21:59,094 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:21:59,094 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:21:59,094 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:21:59,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,119 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,135 INFO L138 Inliner]: procedures = 364, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-11-10 10:21:59,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:21:59,136 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:21:59,136 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:21:59,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:21:59,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,149 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,164 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 10:21:59,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,171 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,172 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:21:59,178 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:21:59,178 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:21:59,182 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:21:59,183 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (1/1) ... [2024-11-10 10:21:59,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:21:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:21:59,214 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) [2024-11-10 10:21:59,216 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 [2024-11-10 10:21:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:21:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:21:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:21:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-11-10 10:21:59,257 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-11-10 10:21:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:21:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:21:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:21:59,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:21:59,259 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:21:59,352 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:21:59,354 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:21:59,457 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:21:59,458 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:21:59,545 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:21:59,545 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:21:59,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:59 BoogieIcfgContainer [2024-11-10 10:21:59,545 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:21:59,546 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:21:59,547 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:21:59,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:21:59,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:21:58" (1/3) ... [2024-11-10 10:21:59,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21078db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:59, skipping insertion in model container [2024-11-10 10:21:59,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:21:59" (2/3) ... [2024-11-10 10:21:59,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21078db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:21:59, skipping insertion in model container [2024-11-10 10:21:59,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:59" (3/3) ... [2024-11-10 10:21:59,551 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-11-10 10:21:59,564 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:21:59,564 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:21:59,564 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:21:59,597 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-10 10:21:59,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 29 transitions, 65 flow [2024-11-10 10:21:59,651 INFO L124 PetriNetUnfolderBase]: 5/28 cut-off events. [2024-11-10 10:21:59,651 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:21:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 5/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-10 10:21:59,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 29 transitions, 65 flow [2024-11-10 10:21:59,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 25 transitions, 56 flow [2024-11-10 10:21:59,662 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:21:59,669 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;@317f870f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:21:59,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-10 10:21:59,681 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:21:59,681 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-10 10:21:59,681 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 10:21:59,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:21:59,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:21:59,682 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:21:59,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:21:59,687 INFO L85 PathProgramCache]: Analyzing trace with hash -24719282, now seen corresponding path program 1 times [2024-11-10 10:21:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:21:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749385168] [2024-11-10 10:21:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:21:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:21:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:21:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:21:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:21:59,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749385168] [2024-11-10 10:21:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749385168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:21:59,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:21:59,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:21:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517448235] [2024-11-10 10:21:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:21:59,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:21:59,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:21:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:21:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:21:59,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-10 10:21:59,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:21:59,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:21:59,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-10 10:21:59,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:21:59,982 INFO L124 PetriNetUnfolderBase]: 31/81 cut-off events. [2024-11-10 10:21:59,983 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:21:59,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 81 events. 31/81 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 20 based on Foata normal form. 11/84 useless extension candidates. Maximal degree in co-relation 135. Up to 66 conditions per place. [2024-11-10 10:21:59,986 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 16 selfloop transitions, 0 changer transitions 0/23 dead transitions. [2024-11-10 10:21:59,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 84 flow [2024-11-10 10:21:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:21:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:21:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 36 transitions. [2024-11-10 10:21:59,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2024-11-10 10:21:59,998 INFO L175 Difference]: Start difference. First operand has 25 places, 25 transitions, 56 flow. Second operand 2 states and 36 transitions. [2024-11-10 10:21:59,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 84 flow [2024-11-10 10:22:00,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:00,003 INFO L231 Difference]: Finished difference. Result has 24 places, 23 transitions, 48 flow [2024-11-10 10:22:00,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=23} [2024-11-10 10:22:00,008 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2024-11-10 10:22:00,008 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 23 transitions, 48 flow [2024-11-10 10:22:00,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:00,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:00,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:22:00,010 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:00,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2051336796, now seen corresponding path program 1 times [2024-11-10 10:22:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:00,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547225965] [2024-11-10 10:22:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:00,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:00,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547225965] [2024-11-10 10:22:00,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547225965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:00,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:00,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:22:00,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222098633] [2024-11-10 10:22:00,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:00,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:22:00,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:00,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:22:00,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:22:00,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-10 10:22:00,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 23 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:00,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-10 10:22:00,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:00,174 INFO L124 PetriNetUnfolderBase]: 56/140 cut-off events. [2024-11-10 10:22:00,174 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2024-11-10 10:22:00,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 140 events. 56/140 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 487 event pairs, 24 based on Foata normal form. 5/137 useless extension candidates. Maximal degree in co-relation 256. Up to 76 conditions per place. [2024-11-10 10:22:00,175 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 24 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-11-10 10:22:00,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 118 flow [2024-11-10 10:22:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:22:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:22:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-11-10 10:22:00,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-10 10:22:00,176 INFO L175 Difference]: Start difference. First operand has 24 places, 23 transitions, 48 flow. Second operand 3 states and 51 transitions. [2024-11-10 10:22:00,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 118 flow [2024-11-10 10:22:00,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:22:00,178 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 60 flow [2024-11-10 10:22:00,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2024-11-10 10:22:00,179 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2024-11-10 10:22:00,179 INFO L471 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 60 flow [2024-11-10 10:22:00,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,179 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:00,180 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:00,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:22:00,180 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:00,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash -642445701, now seen corresponding path program 1 times [2024-11-10 10:22:00,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:00,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012096950] [2024-11-10 10:22:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:00,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:00,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012096950] [2024-11-10 10:22:00,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012096950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:00,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314100444] [2024-11-10 10:22:00,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:00,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:00,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:00,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:00,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:22:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:00,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 10:22:00,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:22:00,353 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:22:00,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314100444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:00,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:22:00,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-10 10:22:00,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52974651] [2024-11-10 10:22:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:00,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:22:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:22:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:22:00,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-10 10:22:00,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:00,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-10 10:22:00,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:00,430 INFO L124 PetriNetUnfolderBase]: 101/246 cut-off events. [2024-11-10 10:22:00,430 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-10 10:22:00,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 246 events. 101/246 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1021 event pairs, 45 based on Foata normal form. 10/253 useless extension candidates. Maximal degree in co-relation 496. Up to 126 conditions per place. [2024-11-10 10:22:00,432 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-10 10:22:00,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 148 flow [2024-11-10 10:22:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:22:00,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:22:00,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-10 10:22:00,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5977011494252874 [2024-11-10 10:22:00,434 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 60 flow. Second operand 3 states and 52 transitions. [2024-11-10 10:22:00,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 148 flow [2024-11-10 10:22:00,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:22:00,435 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 70 flow [2024-11-10 10:22:00,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2024-11-10 10:22:00,436 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2024-11-10 10:22:00,436 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 70 flow [2024-11-10 10:22:00,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:00,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:00,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:22:00,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:00,642 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:00,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2105910123, now seen corresponding path program 1 times [2024-11-10 10:22:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896913920] [2024-11-10 10:22:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:00,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:00,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896913920] [2024-11-10 10:22:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896913920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:00,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:22:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:22:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893048231] [2024-11-10 10:22:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:00,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:22:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:22:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:22:00,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-11-10 10:22:00,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:00,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-11-10 10:22:00,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:00,854 INFO L124 PetriNetUnfolderBase]: 59/173 cut-off events. [2024-11-10 10:22:00,854 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-10 10:22:00,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 173 events. 59/173 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 577 event pairs, 20 based on Foata normal form. 16/185 useless extension candidates. Maximal degree in co-relation 387. Up to 72 conditions per place. [2024-11-10 10:22:00,858 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 21 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-10 10:22:00,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 148 flow [2024-11-10 10:22:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:22:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:22:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-10 10:22:00,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-10 10:22:00,860 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 70 flow. Second operand 3 states and 50 transitions. [2024-11-10 10:22:00,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 148 flow [2024-11-10 10:22:00,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:22:00,861 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 76 flow [2024-11-10 10:22:00,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2024-11-10 10:22:00,862 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2024-11-10 10:22:00,862 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 76 flow [2024-11-10 10:22:00,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:00,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:00,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:00,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:22:00,863 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:00,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:00,864 INFO L85 PathProgramCache]: Analyzing trace with hash -69691755, now seen corresponding path program 2 times [2024-11-10 10:22:00,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:00,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098664726] [2024-11-10 10:22:00,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:00,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:00,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098664726] [2024-11-10 10:22:00,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098664726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:00,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085958312] [2024-11-10 10:22:00,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:22:00,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:00,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:00,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:00,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:22:00,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:22:00,989 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:00,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 10:22:00,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:01,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:01,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085958312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:01,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:01,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-10 10:22:01,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925650607] [2024-11-10 10:22:01,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:01,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:22:01,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:22:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:22:01,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-10 10:22:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-10 10:22:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:01,402 INFO L124 PetriNetUnfolderBase]: 250/628 cut-off events. [2024-11-10 10:22:01,402 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2024-11-10 10:22:01,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 628 events. 250/628 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2704 event pairs, 21 based on Foata normal form. 68/696 useless extension candidates. Maximal degree in co-relation 1547. Up to 93 conditions per place. [2024-11-10 10:22:01,411 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 116 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-11-10 10:22:01,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 153 transitions, 800 flow [2024-11-10 10:22:01,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:22:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:22:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 259 transitions. [2024-11-10 10:22:01,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5581896551724138 [2024-11-10 10:22:01,415 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 76 flow. Second operand 16 states and 259 transitions. [2024-11-10 10:22:01,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 153 transitions, 800 flow [2024-11-10 10:22:01,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 153 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:22:01,420 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 346 flow [2024-11-10 10:22:01,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=346, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-11-10 10:22:01,422 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 32 predicate places. [2024-11-10 10:22:01,423 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 346 flow [2024-11-10 10:22:01,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:01,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:01,423 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:01,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:22:01,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:01,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:01,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:01,625 INFO L85 PathProgramCache]: Analyzing trace with hash 617175040, now seen corresponding path program 3 times [2024-11-10 10:22:01,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:01,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768163021] [2024-11-10 10:22:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:01,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 10:22:01,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:01,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768163021] [2024-11-10 10:22:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768163021] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:01,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425129802] [2024-11-10 10:22:01,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:22:01,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:01,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:01,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:01,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:22:01,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:22:01,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:01,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:22:01,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 10:22:01,868 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-10 10:22:01,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425129802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:01,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:01,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-10 10:22:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763014109] [2024-11-10 10:22:01,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:01,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:22:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:22:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:22:01,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:01,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:01,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:01,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:02,141 INFO L124 PetriNetUnfolderBase]: 433/1127 cut-off events. [2024-11-10 10:22:02,142 INFO L125 PetriNetUnfolderBase]: For 5507/5548 co-relation queries the response was YES. [2024-11-10 10:22:02,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3759 conditions, 1127 events. 433/1127 cut-off events. For 5507/5548 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5446 event pairs, 80 based on Foata normal form. 102/1203 useless extension candidates. Maximal degree in co-relation 3740. Up to 170 conditions per place. [2024-11-10 10:22:02,149 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 87 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-11-10 10:22:02,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 854 flow [2024-11-10 10:22:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:22:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:22:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-11-10 10:22:02,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2024-11-10 10:22:02,150 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 346 flow. Second operand 8 states and 134 transitions. [2024-11-10 10:22:02,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 854 flow [2024-11-10 10:22:02,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 778 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:02,159 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 416 flow [2024-11-10 10:22:02,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=416, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-11-10 10:22:02,159 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 42 predicate places. [2024-11-10 10:22:02,159 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 416 flow [2024-11-10 10:22:02,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:02,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:02,160 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:02,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:22:02,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:02,361 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:02,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -280994700, now seen corresponding path program 4 times [2024-11-10 10:22:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367758172] [2024-11-10 10:22:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-10 10:22:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:02,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367758172] [2024-11-10 10:22:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367758172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494016564] [2024-11-10 10:22:02,534 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:22:02,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:02,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:02,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:02,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:22:02,622 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:22:02,622 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:02,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:22:02,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-10 10:22:02,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-11-10 10:22:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494016564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:02,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:02,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-10 10:22:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572247103] [2024-11-10 10:22:02,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:02,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-10 10:22:02,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-10 10:22:02,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-10 10:22:02,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:02,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 416 flow. Second operand has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:02,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:02,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:02,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:03,244 INFO L124 PetriNetUnfolderBase]: 907/2507 cut-off events. [2024-11-10 10:22:03,245 INFO L125 PetriNetUnfolderBase]: For 21592/21624 co-relation queries the response was YES. [2024-11-10 10:22:03,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8986 conditions, 2507 events. 907/2507 cut-off events. For 21592/21624 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 14593 event pairs, 89 based on Foata normal form. 166/2665 useless extension candidates. Maximal degree in co-relation 8962. Up to 373 conditions per place. [2024-11-10 10:22:03,261 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 197 selfloop transitions, 36 changer transitions 0/239 dead transitions. [2024-11-10 10:22:03,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 239 transitions, 2350 flow [2024-11-10 10:22:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:22:03,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:22:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-11-10 10:22:03,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6149425287356322 [2024-11-10 10:22:03,265 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 416 flow. Second operand 12 states and 214 transitions. [2024-11-10 10:22:03,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 239 transitions, 2350 flow [2024-11-10 10:22:03,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 239 transitions, 2106 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:03,293 INFO L231 Difference]: Finished difference. Result has 83 places, 78 transitions, 644 flow [2024-11-10 10:22:03,293 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=644, PETRI_PLACES=83, PETRI_TRANSITIONS=78} [2024-11-10 10:22:03,294 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 58 predicate places. [2024-11-10 10:22:03,294 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 78 transitions, 644 flow [2024-11-10 10:22:03,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.153846153846153) internal successors, (158), 13 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:03,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:03,296 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:03,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:22:03,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:03,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:03,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1920478074, now seen corresponding path program 5 times [2024-11-10 10:22:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:03,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174908321] [2024-11-10 10:22:03,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:03,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-10 10:22:03,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:03,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174908321] [2024-11-10 10:22:03,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174908321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:03,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106089735] [2024-11-10 10:22:03,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-10 10:22:03,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:03,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:03,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:03,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:22:03,803 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-10 10:22:03,803 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:03,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:22:03,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-10 10:22:03,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 102 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-10 10:22:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106089735] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:03,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-10 10:22:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311134127] [2024-11-10 10:22:03,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:03,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-10 10:22:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-10 10:22:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-10 10:22:03,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:03,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 78 transitions, 644 flow. Second operand has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:03,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:03,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:03,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:04,829 INFO L124 PetriNetUnfolderBase]: 2006/5320 cut-off events. [2024-11-10 10:22:04,829 INFO L125 PetriNetUnfolderBase]: For 44631/44762 co-relation queries the response was YES. [2024-11-10 10:22:04,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19602 conditions, 5320 events. 2006/5320 cut-off events. For 44631/44762 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 33132 event pairs, 196 based on Foata normal form. 455/5709 useless extension candidates. Maximal degree in co-relation 19571. Up to 814 conditions per place. [2024-11-10 10:22:04,861 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 273 selfloop transitions, 28 changer transitions 0/312 dead transitions. [2024-11-10 10:22:04,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 312 transitions, 2866 flow [2024-11-10 10:22:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-10 10:22:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-10 10:22:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 274 transitions. [2024-11-10 10:22:04,863 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2024-11-10 10:22:04,863 INFO L175 Difference]: Start difference. First operand has 83 places, 78 transitions, 644 flow. Second operand 16 states and 274 transitions. [2024-11-10 10:22:04,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 312 transitions, 2866 flow [2024-11-10 10:22:04,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 312 transitions, 2776 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 10:22:04,886 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 842 flow [2024-11-10 10:22:04,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=842, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-11-10 10:22:04,887 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 79 predicate places. [2024-11-10 10:22:04,887 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 842 flow [2024-11-10 10:22:04,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.823529411764707) internal successors, (201), 17 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:04,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:04,888 INFO L204 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 14, 14, 14, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:04,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 10:22:05,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:05,089 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1318158494, now seen corresponding path program 6 times [2024-11-10 10:22:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:05,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538042796] [2024-11-10 10:22:05,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:05,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-10 10:22:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538042796] [2024-11-10 10:22:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538042796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505882660] [2024-11-10 10:22:05,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-10 10:22:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:05,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:05,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:22:05,616 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-10 10:22:05,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:05,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-10 10:22:05,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:05,773 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-10 10:22:05,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 357 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-11-10 10:22:06,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505882660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:06,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:06,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-10 10:22:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549947751] [2024-11-10 10:22:06,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:06,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:22:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:22:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:22:06,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:06,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 842 flow. Second operand has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 23 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:06,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:06,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:06,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:07,779 INFO L124 PetriNetUnfolderBase]: 3743/10157 cut-off events. [2024-11-10 10:22:07,779 INFO L125 PetriNetUnfolderBase]: For 153929/153977 co-relation queries the response was YES. [2024-11-10 10:22:07,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41421 conditions, 10157 events. 3743/10157 cut-off events. For 153929/153977 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 71524 event pairs, 167 based on Foata normal form. 594/10742 useless extension candidates. Maximal degree in co-relation 41381. Up to 1575 conditions per place. [2024-11-10 10:22:07,841 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 565 selfloop transitions, 66 changer transitions 0/638 dead transitions. [2024-11-10 10:22:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 638 transitions, 8372 flow [2024-11-10 10:22:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:22:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:22:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 398 transitions. [2024-11-10 10:22:07,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6238244514106583 [2024-11-10 10:22:07,843 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 842 flow. Second operand 22 states and 398 transitions. [2024-11-10 10:22:07,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 638 transitions, 8372 flow [2024-11-10 10:22:07,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 638 transitions, 8082 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 10:22:07,994 INFO L231 Difference]: Finished difference. Result has 131 places, 120 transitions, 1372 flow [2024-11-10 10:22:07,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=812, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1372, PETRI_PLACES=131, PETRI_TRANSITIONS=120} [2024-11-10 10:22:07,995 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 106 predicate places. [2024-11-10 10:22:07,997 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 120 transitions, 1372 flow [2024-11-10 10:22:07,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.565217391304348) internal successors, (289), 23 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:07,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:07,997 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 20, 20, 20, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:08,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:22:08,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:08,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:08,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1799388534, now seen corresponding path program 7 times [2024-11-10 10:22:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129702223] [2024-11-10 10:22:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-10 10:22:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129702223] [2024-11-10 10:22:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129702223] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969979117] [2024-11-10 10:22:08,681 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-10 10:22:08,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:08,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:08,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:08,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:22:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:08,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-10 10:22:08,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:08,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-10 10:22:08,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1754 backedges. 40 proven. 574 refuted. 0 times theorem prover too weak. 1140 trivial. 0 not checked. [2024-11-10 10:22:09,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969979117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:09,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:09,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-11-10 10:22:09,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441689457] [2024-11-10 10:22:09,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:09,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:22:09,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:09,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:22:09,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-10 10:22:09,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:09,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 120 transitions, 1372 flow. Second operand has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:09,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:09,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:09,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:11,525 INFO L124 PetriNetUnfolderBase]: 5376/14272 cut-off events. [2024-11-10 10:22:11,525 INFO L125 PetriNetUnfolderBase]: For 207719/208104 co-relation queries the response was YES. [2024-11-10 10:22:11,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60900 conditions, 14272 events. 5376/14272 cut-off events. For 207719/208104 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 102250 event pairs, 346 based on Foata normal form. 829/15005 useless extension candidates. Maximal degree in co-relation 60849. Up to 2184 conditions per place. [2024-11-10 10:22:11,628 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 591 selfloop transitions, 34 changer transitions 0/639 dead transitions. [2024-11-10 10:22:11,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 639 transitions, 7858 flow [2024-11-10 10:22:11,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 10:22:11,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-10 10:22:11,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 374 transitions. [2024-11-10 10:22:11,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-11-10 10:22:11,630 INFO L175 Difference]: Start difference. First operand has 131 places, 120 transitions, 1372 flow. Second operand 22 states and 374 transitions. [2024-11-10 10:22:11,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 639 transitions, 7858 flow [2024-11-10 10:22:11,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 639 transitions, 7480 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-11-10 10:22:11,780 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 1538 flow [2024-11-10 10:22:11,780 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1538, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-11-10 10:22:11,780 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 125 predicate places. [2024-11-10 10:22:11,781 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 1538 flow [2024-11-10 10:22:11,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:11,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:11,781 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:11,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:22:11,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:11,982 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:11,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 753255954, now seen corresponding path program 8 times [2024-11-10 10:22:11,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118391029] [2024-11-10 10:22:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:14,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:14,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118391029] [2024-11-10 10:22:14,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118391029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:14,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168514199] [2024-11-10 10:22:14,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:22:14,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:14,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:14,023 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:14,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 10:22:14,199 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:22:14,199 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:14,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-11-10 10:22:14,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:14,482 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:22:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2360 backedges. 0 proven. 2360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:22:14,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168514199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:22:14,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:22:14,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-11-10 10:22:14,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350835399] [2024-11-10 10:22:14,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:22:14,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-10 10:22:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-10 10:22:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-11-10 10:22:14,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-10 10:22:14,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 1538 flow. Second operand has 45 states, 45 states have (on average 11.777777777777779) internal successors, (530), 45 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:14,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:14,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-10 10:22:14,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:24,621 INFO L124 PetriNetUnfolderBase]: 8690/26468 cut-off events. [2024-11-10 10:22:24,622 INFO L125 PetriNetUnfolderBase]: For 449145/449145 co-relation queries the response was YES. [2024-11-10 10:22:24,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132788 conditions, 26468 events. 8690/26468 cut-off events. For 449145/449145 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 234045 event pairs, 1104 based on Foata normal form. 1/26348 useless extension candidates. Maximal degree in co-relation 132730. Up to 4386 conditions per place. [2024-11-10 10:22:24,826 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 1764 selfloop transitions, 83 changer transitions 2/1868 dead transitions. [2024-11-10 10:22:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 1868 transitions, 26956 flow [2024-11-10 10:22:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-10 10:22:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-10 10:22:24,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 798 transitions. [2024-11-10 10:22:24,829 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6253918495297806 [2024-11-10 10:22:24,829 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 1538 flow. Second operand 44 states and 798 transitions. [2024-11-10 10:22:24,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 1868 transitions, 26956 flow [2024-11-10 10:22:25,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1868 transitions, 25829 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-11-10 10:22:25,303 INFO L231 Difference]: Finished difference. Result has 182 places, 209 transitions, 1834 flow [2024-11-10 10:22:25,303 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1492, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1834, PETRI_PLACES=182, PETRI_TRANSITIONS=209} [2024-11-10 10:22:25,304 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 157 predicate places. [2024-11-10 10:22:25,304 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 209 transitions, 1834 flow [2024-11-10 10:22:25,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 11.777777777777779) internal successors, (530), 45 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:25,304 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:25,304 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:25,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 10:22:25,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-10 10:22:25,505 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:25,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:25,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1266546714, now seen corresponding path program 9 times [2024-11-10 10:22:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643687135] [2024-11-10 10:22:25,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:25,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1186 proven. 175 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2024-11-10 10:22:26,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643687135] [2024-11-10 10:22:26,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643687135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:26,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626122393] [2024-11-10 10:22:26,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:22:26,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:26,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:26,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:26,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 10:22:26,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-11-10 10:22:26,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:26,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:22:26,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1361 proven. 0 refuted. 0 times theorem prover too weak. 1121 trivial. 0 not checked. [2024-11-10 10:22:26,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:22:26,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626122393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:26,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:22:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-11-10 10:22:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002460456] [2024-11-10 10:22:26,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:26,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:22:26,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:26,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:22:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-11-10 10:22:26,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:26,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 209 transitions, 1834 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:26,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:26,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:26,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:31,883 INFO L124 PetriNetUnfolderBase]: 9233/23657 cut-off events. [2024-11-10 10:22:31,883 INFO L125 PetriNetUnfolderBase]: For 268115/268190 co-relation queries the response was YES. [2024-11-10 10:22:32,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109355 conditions, 23657 events. 9233/23657 cut-off events. For 268115/268190 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 196695 event pairs, 748 based on Foata normal form. 155/23668 useless extension candidates. Maximal degree in co-relation 109294. Up to 3989 conditions per place. [2024-11-10 10:22:32,100 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 2038 selfloop transitions, 63 changer transitions 0/2109 dead transitions. [2024-11-10 10:22:32,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 2109 transitions, 20008 flow [2024-11-10 10:22:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:22:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:22:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 401 transitions. [2024-11-10 10:22:32,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011994002998501 [2024-11-10 10:22:32,103 INFO L175 Difference]: Start difference. First operand has 182 places, 209 transitions, 1834 flow. Second operand 23 states and 401 transitions. [2024-11-10 10:22:32,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 2109 transitions, 20008 flow [2024-11-10 10:22:32,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 2109 transitions, 20000 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:22:32,437 INFO L231 Difference]: Finished difference. Result has 201 places, 206 transitions, 1910 flow [2024-11-10 10:22:32,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1910, PETRI_PLACES=201, PETRI_TRANSITIONS=206} [2024-11-10 10:22:32,438 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 176 predicate places. [2024-11-10 10:22:32,439 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 206 transitions, 1910 flow [2024-11-10 10:22:32,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:32,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:22:32,439 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:22:32,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 10:22:32,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:32,640 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:22:32,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:22:32,640 INFO L85 PathProgramCache]: Analyzing trace with hash -770636203, now seen corresponding path program 10 times [2024-11-10 10:22:32,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:22:32,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316662046] [2024-11-10 10:22:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:22:32,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:22:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:22:33,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1186 proven. 116 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2024-11-10 10:22:33,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:22:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316662046] [2024-11-10 10:22:33,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316662046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:22:33,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125461978] [2024-11-10 10:22:33,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:22:33,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:22:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:22:33,378 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:22:33,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 10:22:33,632 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:22:33,632 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:22:33,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 10:22:33,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:22:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2482 backedges. 1302 proven. 0 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2024-11-10 10:22:33,737 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:22:33,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125461978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:22:33,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:22:33,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-11-10 10:22:33,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101671798] [2024-11-10 10:22:33,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:22:33,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-10 10:22:33,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:22:33,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-10 10:22:33,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-11-10 10:22:33,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-10 10:22:33,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 206 transitions, 1910 flow. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:33,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:22:33,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-10 10:22:33,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:22:36,266 INFO L124 PetriNetUnfolderBase]: 5286/13775 cut-off events. [2024-11-10 10:22:36,266 INFO L125 PetriNetUnfolderBase]: For 151355/151752 co-relation queries the response was YES. [2024-11-10 10:22:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65208 conditions, 13775 events. 5286/13775 cut-off events. For 151355/151752 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 99097 event pairs, 534 based on Foata normal form. 405/13970 useless extension candidates. Maximal degree in co-relation 65148. Up to 2184 conditions per place. [2024-11-10 10:22:36,335 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 0 selfloop transitions, 0 changer transitions 1494/1494 dead transitions. [2024-11-10 10:22:36,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1494 transitions, 13773 flow [2024-11-10 10:22:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-10 10:22:36,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-10 10:22:36,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 378 transitions. [2024-11-10 10:22:36,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5667166416791605 [2024-11-10 10:22:36,337 INFO L175 Difference]: Start difference. First operand has 201 places, 206 transitions, 1910 flow. Second operand 23 states and 378 transitions. [2024-11-10 10:22:36,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1494 transitions, 13773 flow [2024-11-10 10:22:36,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 1494 transitions, 12861 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-11-10 10:22:36,472 INFO L231 Difference]: Finished difference. Result has 196 places, 0 transitions, 0 flow [2024-11-10 10:22:36,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=196, PETRI_TRANSITIONS=0} [2024-11-10 10:22:36,472 INFO L277 CegarLoopForPetriNet]: 25 programPoint places, 171 predicate places. [2024-11-10 10:22:36,472 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 0 transitions, 0 flow [2024-11-10 10:22:36,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 23 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:22:36,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-10 10:22:36,475 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2024-11-10 10:22:36,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 10:22:36,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:22:36,680 INFO L407 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2024-11-10 10:22:36,683 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:22:36,683 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:22:36,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:22:36 BasicIcfg [2024-11-10 10:22:36,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:22:36,688 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:22:36,688 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:22:36,688 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:22:36,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:21:59" (3/4) ... [2024-11-10 10:22:36,690 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:22:36,693 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread_function_mutex [2024-11-10 10:22:36,698 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-10 10:22:36,698 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-10 10:22:36,698 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-10 10:22:36,699 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 10:22:36,766 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:22:36,767 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:22:36,767 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:22:36,767 INFO L158 Benchmark]: Toolchain (without parser) took 38217.46ms. Allocated memory was 186.6MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 113.8MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-11-10 10:22:36,767 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:22:36,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.38ms. Allocated memory is still 186.6MB. Free memory was 113.6MB in the beginning and 127.6MB in the end (delta: -14.0MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2024-11-10 10:22:36,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.98ms. Allocated memory is still 186.6MB. Free memory was 127.6MB in the beginning and 125.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:22:36,768 INFO L158 Benchmark]: Boogie Preprocessor took 41.66ms. Allocated memory is still 186.6MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:22:36,768 INFO L158 Benchmark]: IcfgBuilder took 367.00ms. Allocated memory is still 186.6MB. Free memory was 123.2MB in the beginning and 100.3MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-10 10:22:36,768 INFO L158 Benchmark]: TraceAbstraction took 37140.73ms. Allocated memory was 186.6MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 100.3MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-11-10 10:22:36,768 INFO L158 Benchmark]: Witness Printer took 79.22ms. Allocated memory is still 6.3GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-10 10:22:36,770 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 186.6MB. Free memory is still 142.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.38ms. Allocated memory is still 186.6MB. Free memory was 113.6MB in the beginning and 127.6MB in the end (delta: -14.0MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.98ms. Allocated memory is still 186.6MB. Free memory was 127.6MB in the beginning and 125.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.66ms. Allocated memory is still 186.6MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 367.00ms. Allocated memory is still 186.6MB. Free memory was 123.2MB in the beginning and 100.3MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 37140.73ms. Allocated memory was 186.6MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 100.3MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 79.22ms. Allocated memory is still 6.3GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 37.1s, OverallIterations: 13, TraceHistogramMax: 22, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1409 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1390 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21374 IncrementalHoareTripleChecker+Invalid, 21430 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 16 mSDtfsCounter, 21374 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2459 GetRequests, 2264 SyntacticMatches, 13 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1910occurred in iteration=12, InterpolantAutomatonStates: 197, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 2889 NumberOfCodeBlocks, 2871 NumberOfCodeBlocksAsserted, 74 NumberOfCheckSat, 3742 ConstructedInterpolants, 0 QuantifiedInterpolants, 9043 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5246 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 16018/26658 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:22:36,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE