./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.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 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:26:29,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:26:29,121 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:26:29,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:26:29,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:26:29,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:26:29,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:26:29,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:26:29,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:26:29,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:26:29,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:26:29,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:26:29,168 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:26:29,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:26:29,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:26:29,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:26:29,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:26:29,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:26:29,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:26:29,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:26:29,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:26:29,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:26:29,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:26:29,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:26:29,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:26:29,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:26:29,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:26:29,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:26:29,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:26:29,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:26:29,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:26:29,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:26:29,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:26:29,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:26:29,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:26:29,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:26:29,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:26:29,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:26:29,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:26:29,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:26:29,181 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:26:29,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:26:29,182 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c [2024-11-20 09:26:29,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:26:29,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:26:29,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:26:29,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:26:29,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:26:29,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i [2024-11-20 09:26:31,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:26:31,242 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:26:31,242 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.i [2024-11-20 09:26:31,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b86698c1/ff4638cb0f81460aba8d37daccd8bef8/FLAG7ea12a8ef [2024-11-20 09:26:31,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b86698c1/ff4638cb0f81460aba8d37daccd8bef8 [2024-11-20 09:26:31,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:26:31,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:26:31,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:26:31,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:26:31,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:26:31,289 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387a1a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31, skipping insertion in model container [2024-11-20 09:26:31,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,335 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:26:31,519 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-wmm/safe008_tso.i[945,958] [2024-11-20 09:26:31,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:26:31,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:26:31,682 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-wmm/safe008_tso.i[945,958] [2024-11-20 09:26:31,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:26:31,753 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:26:31,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31 WrapperNode [2024-11-20 09:26:31,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:26:31,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:26:31,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:26:31,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:26:31,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,811 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-20 09:26:31,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:26:31,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:26:31,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:26:31,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:26:31,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,829 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,857 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 09:26:31,858 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,858 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,877 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:26:31,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:26:31,883 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:26:31,883 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:26:31,884 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (1/1) ... [2024-11-20 09:26:31,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:26:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:26:31,920 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) [2024-11-20 09:26:31,930 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 [2024-11-20 09:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-20 09:26:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-20 09:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-20 09:26:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-20 09:26:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-20 09:26:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-20 09:26:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:26:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:26:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:26:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:26:31,988 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 09:26:32,210 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:26:32,213 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:26:32,407 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:26:32,408 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:26:32,492 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:26:32,492 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:26:32,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:32 BoogieIcfgContainer [2024-11-20 09:26:32,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:26:32,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:26:32,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:26:32,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:26:32,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:26:31" (1/3) ... [2024-11-20 09:26:32,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3918a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:32, skipping insertion in model container [2024-11-20 09:26:32,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:26:31" (2/3) ... [2024-11-20 09:26:32,501 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3918a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:26:32, skipping insertion in model container [2024-11-20 09:26:32,501 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:32" (3/3) ... [2024-11-20 09:26:32,502 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2024-11-20 09:26:32,527 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:26:32,527 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:26:32,528 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:26:32,596 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 09:26:32,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2024-11-20 09:26:32,676 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-11-20 09:26:32,676 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:26:32,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-11-20 09:26:32,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2024-11-20 09:26:32,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2024-11-20 09:26:32,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:26:32,711 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;@180aa387, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:26:32,711 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:26:32,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:26:32,733 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-11-20 09:26:32,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:26:32,733 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:32,736 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:32,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:32,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 958553775, now seen corresponding path program 1 times [2024-11-20 09:26:32,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:32,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387082083] [2024-11-20 09:26:32,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:32,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387082083] [2024-11-20 09:26:33,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387082083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:33,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:33,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:26:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919988770] [2024-11-20 09:26:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:33,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:26:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:26:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:26:33,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-20 09:26:33,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-11-20 09:26:33,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:33,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-20 09:26:33,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:33,822 INFO L124 PetriNetUnfolderBase]: 741/1472 cut-off events. [2024-11-20 09:26:33,823 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-20 09:26:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 1472 events. 741/1472 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10064 event pairs, 261 based on Foata normal form. 52/1483 useless extension candidates. Maximal degree in co-relation 2671. Up to 643 conditions per place. [2024-11-20 09:26:33,837 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 27 selfloop transitions, 5 changer transitions 29/75 dead transitions. [2024-11-20 09:26:33,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 287 flow [2024-11-20 09:26:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:26:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:26:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-11-20 09:26:33,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-20 09:26:33,851 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 182 transitions. [2024-11-20 09:26:33,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 287 flow [2024-11-20 09:26:33,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:26:33,857 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 119 flow [2024-11-20 09:26:33,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2024-11-20 09:26:33,864 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-11-20 09:26:33,864 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 119 flow [2024-11-20 09:26:33,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-11-20 09:26:33,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:33,865 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:33,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:26:33,865 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:33,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1253896208, now seen corresponding path program 1 times [2024-11-20 09:26:33,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869582511] [2024-11-20 09:26:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:33,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:34,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869582511] [2024-11-20 09:26:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869582511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460605905] [2024-11-20 09:26:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:34,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:34,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:34,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:34,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:34,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-20 09:26:34,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-11-20 09:26:34,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:34,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-20 09:26:34,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:34,608 INFO L124 PetriNetUnfolderBase]: 622/1304 cut-off events. [2024-11-20 09:26:34,609 INFO L125 PetriNetUnfolderBase]: For 1169/1172 co-relation queries the response was YES. [2024-11-20 09:26:34,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 1304 events. 622/1304 cut-off events. For 1169/1172 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9041 event pairs, 143 based on Foata normal form. 49/1326 useless extension candidates. Maximal degree in co-relation 3361. Up to 465 conditions per place. [2024-11-20 09:26:34,619 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 33 selfloop transitions, 5 changer transitions 40/92 dead transitions. [2024-11-20 09:26:34,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 521 flow [2024-11-20 09:26:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:26:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:26:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-11-20 09:26:34,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2024-11-20 09:26:34,626 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 119 flow. Second operand 10 states and 244 transitions. [2024-11-20 09:26:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 92 transitions, 521 flow [2024-11-20 09:26:34,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 92 transitions, 490 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-20 09:26:34,640 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 164 flow [2024-11-20 09:26:34,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2024-11-20 09:26:34,641 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-11-20 09:26:34,641 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 164 flow [2024-11-20 09:26:34,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-11-20 09:26:34,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:34,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:34,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:26:34,642 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:34,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1076580176, now seen corresponding path program 1 times [2024-11-20 09:26:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687000912] [2024-11-20 09:26:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:34,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687000912] [2024-11-20 09:26:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687000912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:34,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:34,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:34,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434762280] [2024-11-20 09:26:34,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:34,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:34,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:34,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-20 09:26:34,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-11-20 09:26:34,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:34,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-20 09:26:34,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:35,129 INFO L124 PetriNetUnfolderBase]: 510/1104 cut-off events. [2024-11-20 09:26:35,129 INFO L125 PetriNetUnfolderBase]: For 2242/2242 co-relation queries the response was YES. [2024-11-20 09:26:35,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 1104 events. 510/1104 cut-off events. For 2242/2242 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7458 event pairs, 156 based on Foata normal form. 32/1107 useless extension candidates. Maximal degree in co-relation 3161. Up to 451 conditions per place. [2024-11-20 09:26:35,141 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 10 changer transitions 30/88 dead transitions. [2024-11-20 09:26:35,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 584 flow [2024-11-20 09:26:35,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:26:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:26:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-11-20 09:26:35,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6342105263157894 [2024-11-20 09:26:35,146 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 164 flow. Second operand 10 states and 241 transitions. [2024-11-20 09:26:35,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 584 flow [2024-11-20 09:26:35,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 537 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-20 09:26:35,157 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 246 flow [2024-11-20 09:26:35,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-11-20 09:26:35,158 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-11-20 09:26:35,159 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 246 flow [2024-11-20 09:26:35,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 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) [2024-11-20 09:26:35,159 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:35,159 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:35,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:26:35,159 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:35,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1648808893, now seen corresponding path program 1 times [2024-11-20 09:26:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123690650] [2024-11-20 09:26:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:35,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:35,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123690650] [2024-11-20 09:26:35,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123690650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:35,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:35,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:35,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319931119] [2024-11-20 09:26:35,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:35,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:35,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:35,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:35,300 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-20 09:26:35,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-11-20 09:26:35,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:35,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-20 09:26:35,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:35,581 INFO L124 PetriNetUnfolderBase]: 442/916 cut-off events. [2024-11-20 09:26:35,581 INFO L125 PetriNetUnfolderBase]: For 2296/2296 co-relation queries the response was YES. [2024-11-20 09:26:35,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 916 events. 442/916 cut-off events. For 2296/2296 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5951 event pairs, 94 based on Foata normal form. 16/902 useless extension candidates. Maximal degree in co-relation 2926. Up to 354 conditions per place. [2024-11-20 09:26:35,592 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 31 selfloop transitions, 10 changer transitions 22/77 dead transitions. [2024-11-20 09:26:35,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 536 flow [2024-11-20 09:26:35,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:26:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-20 09:26:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2024-11-20 09:26:35,594 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-20 09:26:35,594 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 246 flow. Second operand 10 states and 228 transitions. [2024-11-20 09:26:35,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 536 flow [2024-11-20 09:26:35,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 472 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-11-20 09:26:35,605 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 249 flow [2024-11-20 09:26:35,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-11-20 09:26:35,606 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2024-11-20 09:26:35,607 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 249 flow [2024-11-20 09:26:35,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2024-11-20 09:26:35,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:35,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:35,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:26:35,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:35,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:35,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1235923937, now seen corresponding path program 1 times [2024-11-20 09:26:35,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:35,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208135473] [2024-11-20 09:26:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208135473] [2024-11-20 09:26:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208135473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:35,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:35,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:26:35,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395602015] [2024-11-20 09:26:35,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:35,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:35,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:35,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:35,767 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-20 09:26:35,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-20 09:26:35,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:35,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-20 09:26:35,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:36,014 INFO L124 PetriNetUnfolderBase]: 458/1044 cut-off events. [2024-11-20 09:26:36,015 INFO L125 PetriNetUnfolderBase]: For 1964/1964 co-relation queries the response was YES. [2024-11-20 09:26:36,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3097 conditions, 1044 events. 458/1044 cut-off events. For 1964/1964 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7160 event pairs, 100 based on Foata normal form. 20/1032 useless extension candidates. Maximal degree in co-relation 3068. Up to 380 conditions per place. [2024-11-20 09:26:36,025 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 30 selfloop transitions, 10 changer transitions 18/72 dead transitions. [2024-11-20 09:26:36,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 72 transitions, 485 flow [2024-11-20 09:26:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:26:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:26:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-11-20 09:26:36,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6282894736842105 [2024-11-20 09:26:36,027 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 249 flow. Second operand 8 states and 191 transitions. [2024-11-20 09:26:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 72 transitions, 485 flow [2024-11-20 09:26:36,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 72 transitions, 429 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-11-20 09:26:36,034 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 244 flow [2024-11-20 09:26:36,035 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2024-11-20 09:26:36,036 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-11-20 09:26:36,036 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 244 flow [2024-11-20 09:26:36,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-20 09:26:36,036 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:36,036 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:36,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:26:36,037 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:36,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:36,038 INFO L85 PathProgramCache]: Analyzing trace with hash 2073330572, now seen corresponding path program 1 times [2024-11-20 09:26:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266377996] [2024-11-20 09:26:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:36,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266377996] [2024-11-20 09:26:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266377996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520394835] [2024-11-20 09:26:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:36,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:36,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:36,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:36,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-11-20 09:26:36,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-20 09:26:36,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:36,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-11-20 09:26:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:36,442 INFO L124 PetriNetUnfolderBase]: 455/1094 cut-off events. [2024-11-20 09:26:36,443 INFO L125 PetriNetUnfolderBase]: For 1664/1690 co-relation queries the response was YES. [2024-11-20 09:26:36,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 1094 events. 455/1094 cut-off events. For 1664/1690 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8072 event pairs, 129 based on Foata normal form. 26/1045 useless extension candidates. Maximal degree in co-relation 2727. Up to 265 conditions per place. [2024-11-20 09:26:36,452 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 26 selfloop transitions, 3 changer transitions 24/73 dead transitions. [2024-11-20 09:26:36,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 455 flow [2024-11-20 09:26:36,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:26:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:26:36,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-11-20 09:26:36,454 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-11-20 09:26:36,455 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 244 flow. Second operand 8 states and 202 transitions. [2024-11-20 09:26:36,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 455 flow [2024-11-20 09:26:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 73 transitions, 401 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-11-20 09:26:36,461 INFO L231 Difference]: Finished difference. Result has 68 places, 36 transitions, 176 flow [2024-11-20 09:26:36,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=176, PETRI_PLACES=68, PETRI_TRANSITIONS=36} [2024-11-20 09:26:36,464 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-11-20 09:26:36,464 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 36 transitions, 176 flow [2024-11-20 09:26:36,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-20 09:26:36,465 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:36,465 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:36,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:26:36,465 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:36,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:36,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1895632714, now seen corresponding path program 1 times [2024-11-20 09:26:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222355152] [2024-11-20 09:26:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:36,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222355152] [2024-11-20 09:26:36,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222355152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:36,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:36,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691010223] [2024-11-20 09:26:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:36,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:36,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:36,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2024-11-20 09:26:36,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 36 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-20 09:26:36,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:36,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2024-11-20 09:26:36,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:36,795 INFO L124 PetriNetUnfolderBase]: 300/706 cut-off events. [2024-11-20 09:26:36,795 INFO L125 PetriNetUnfolderBase]: For 1062/1091 co-relation queries the response was YES. [2024-11-20 09:26:36,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1770 conditions, 706 events. 300/706 cut-off events. For 1062/1091 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4546 event pairs, 55 based on Foata normal form. 24/687 useless extension candidates. Maximal degree in co-relation 1741. Up to 178 conditions per place. [2024-11-20 09:26:36,824 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 22 selfloop transitions, 3 changer transitions 23/64 dead transitions. [2024-11-20 09:26:36,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 367 flow [2024-11-20 09:26:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 09:26:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-20 09:26:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-11-20 09:26:36,826 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6513157894736842 [2024-11-20 09:26:36,826 INFO L175 Difference]: Start difference. First operand has 68 places, 36 transitions, 176 flow. Second operand 8 states and 198 transitions. [2024-11-20 09:26:36,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 367 flow [2024-11-20 09:26:36,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 64 transitions, 280 flow, removed 30 selfloop flow, removed 16 redundant places. [2024-11-20 09:26:36,830 INFO L231 Difference]: Finished difference. Result has 61 places, 32 transitions, 120 flow [2024-11-20 09:26:36,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=120, PETRI_PLACES=61, PETRI_TRANSITIONS=32} [2024-11-20 09:26:36,831 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-11-20 09:26:36,832 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 32 transitions, 120 flow [2024-11-20 09:26:36,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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) [2024-11-20 09:26:36,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:36,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:36,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 09:26:36,833 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:36,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:36,833 INFO L85 PathProgramCache]: Analyzing trace with hash 91394804, now seen corresponding path program 1 times [2024-11-20 09:26:36,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:36,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89668006] [2024-11-20 09:26:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:36,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:36,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:36,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:36,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89668006] [2024-11-20 09:26:36,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89668006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:36,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:36,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:26:36,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819330842] [2024-11-20 09:26:36,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:36,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:26:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:26:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:26:36,959 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:36,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 32 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-20 09:26:36,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:36,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:36,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:37,055 INFO L124 PetriNetUnfolderBase]: 306/599 cut-off events. [2024-11-20 09:26:37,055 INFO L125 PetriNetUnfolderBase]: For 198/210 co-relation queries the response was YES. [2024-11-20 09:26:37,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1310 conditions, 599 events. 306/599 cut-off events. For 198/210 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2982 event pairs, 90 based on Foata normal form. 27/590 useless extension candidates. Maximal degree in co-relation 1288. Up to 261 conditions per place. [2024-11-20 09:26:37,059 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 23 selfloop transitions, 4 changer transitions 4/47 dead transitions. [2024-11-20 09:26:37,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 216 flow [2024-11-20 09:26:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:26:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:26:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-20 09:26:37,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2024-11-20 09:26:37,061 INFO L175 Difference]: Start difference. First operand has 61 places, 32 transitions, 120 flow. Second operand 4 states and 113 transitions. [2024-11-20 09:26:37,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 216 flow [2024-11-20 09:26:37,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 181 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-11-20 09:26:37,064 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 113 flow [2024-11-20 09:26:37,064 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2024-11-20 09:26:37,066 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2024-11-20 09:26:37,068 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 113 flow [2024-11-20 09:26:37,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2024-11-20 09:26:37,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:37,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:37,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 09:26:37,072 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:37,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1730724641, now seen corresponding path program 1 times [2024-11-20 09:26:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365748437] [2024-11-20 09:26:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:37,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:37,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:37,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365748437] [2024-11-20 09:26:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365748437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:37,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:37,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:26:37,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604175969] [2024-11-20 09:26:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:37,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:26:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:26:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:26:37,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:37,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2024-11-20 09:26:37,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:37,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:37,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:37,261 INFO L124 PetriNetUnfolderBase]: 226/453 cut-off events. [2024-11-20 09:26:37,261 INFO L125 PetriNetUnfolderBase]: For 165/250 co-relation queries the response was YES. [2024-11-20 09:26:37,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 453 events. 226/453 cut-off events. For 165/250 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1992 event pairs, 22 based on Foata normal form. 27/456 useless extension candidates. Maximal degree in co-relation 1088. Up to 176 conditions per place. [2024-11-20 09:26:37,264 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 24 selfloop transitions, 6 changer transitions 8/54 dead transitions. [2024-11-20 09:26:37,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 250 flow [2024-11-20 09:26:37,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:26:37,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:26:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-11-20 09:26:37,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-11-20 09:26:37,265 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 113 flow. Second operand 5 states and 140 transitions. [2024-11-20 09:26:37,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 250 flow [2024-11-20 09:26:37,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 09:26:37,267 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 131 flow [2024-11-20 09:26:37,267 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2024-11-20 09:26:37,267 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-11-20 09:26:37,268 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 131 flow [2024-11-20 09:26:37,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 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) [2024-11-20 09:26:37,268 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:26:37,268 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:37,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 09:26:37,269 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-20 09:26:37,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:26:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash 803513962, now seen corresponding path program 1 times [2024-11-20 09:26:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:26:37,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352975745] [2024-11-20 09:26:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:26:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:26:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:26:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 09:26:37,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:26:37,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352975745] [2024-11-20 09:26:37,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352975745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:26:37,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:26:37,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:26:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568654452] [2024-11-20 09:26:37,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:26:37,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:26:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:26:37,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:26:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:26:37,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-11-20 09:26:37,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-20 09:26:37,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:26:37,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-11-20 09:26:37,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:26:37,496 INFO L124 PetriNetUnfolderBase]: 104/211 cut-off events. [2024-11-20 09:26:37,496 INFO L125 PetriNetUnfolderBase]: For 238/338 co-relation queries the response was YES. [2024-11-20 09:26:37,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 211 events. 104/211 cut-off events. For 238/338 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 673 event pairs, 2 based on Foata normal form. 16/217 useless extension candidates. Maximal degree in co-relation 578. Up to 56 conditions per place. [2024-11-20 09:26:37,498 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2024-11-20 09:26:37,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 231 flow [2024-11-20 09:26:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:26:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:26:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-11-20 09:26:37,500 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-11-20 09:26:37,500 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 131 flow. Second operand 6 states and 156 transitions. [2024-11-20 09:26:37,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 231 flow [2024-11-20 09:26:37,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 206 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-20 09:26:37,502 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-11-20 09:26:37,502 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-11-20 09:26:37,503 INFO L277 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-11-20 09:26:37,503 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-11-20 09:26:37,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-20 09:26:37,506 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-20 09:26:37,507 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-20 09:26:37,508 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-20 09:26:37,508 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-20 09:26:37,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 09:26:37,508 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:26:37,512 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 09:26:37,512 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 09:26:37,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:26:37 BasicIcfg [2024-11-20 09:26:37,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 09:26:37,519 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 09:26:37,519 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 09:26:37,519 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 09:26:37,520 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:26:32" (3/4) ... [2024-11-20 09:26:37,522 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 09:26:37,526 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-20 09:26:37,527 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-20 09:26:37,527 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-20 09:26:37,531 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-20 09:26:37,531 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-20 09:26:37,532 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 09:26:37,532 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 09:26:37,620 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 09:26:37,621 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 09:26:37,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 09:26:37,621 INFO L158 Benchmark]: Toolchain (without parser) took 6342.95ms. Allocated memory was 155.2MB in the beginning and 262.1MB in the end (delta: 107.0MB). Free memory was 98.0MB in the beginning and 206.6MB in the end (delta: -108.6MB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,622 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 09:26:37,622 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.74ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 74.9MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,622 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.24ms. Allocated memory is still 155.2MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,623 INFO L158 Benchmark]: Boogie Preprocessor took 67.34ms. Allocated memory is still 155.2MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,623 INFO L158 Benchmark]: RCFGBuilder took 611.03ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 70.7MB in the beginning and 162.5MB in the end (delta: -91.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,623 INFO L158 Benchmark]: TraceAbstraction took 5023.15ms. Allocated memory was 205.5MB in the beginning and 262.1MB in the end (delta: 56.6MB). Free memory was 162.5MB in the beginning and 210.8MB in the end (delta: -48.3MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,624 INFO L158 Benchmark]: Witness Printer took 102.04ms. Allocated memory is still 262.1MB. Free memory was 210.8MB in the beginning and 206.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 09:26:37,627 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 114.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.74ms. Allocated memory is still 155.2MB. Free memory was 97.6MB in the beginning and 74.9MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.24ms. Allocated memory is still 155.2MB. Free memory was 74.9MB in the beginning and 72.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.34ms. Allocated memory is still 155.2MB. Free memory was 72.8MB in the beginning and 70.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 611.03ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 70.7MB in the beginning and 162.5MB in the end (delta: -91.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 5023.15ms. Allocated memory was 205.5MB in the beginning and 262.1MB in the end (delta: 56.6MB). Free memory was 162.5MB in the beginning and 210.8MB in the end (delta: -48.3MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Witness Printer took 102.04ms. Allocated memory is still 262.1MB. Free memory was 210.8MB in the beginning and 206.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 62 locations, 4 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: 4.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 364 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 154 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 864 IncrementalHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 74 mSDtfsCounter, 864 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 76, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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! [2024-11-20 09:26:37,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE