./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/safe034_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/safe034_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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:28:08,588 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:28:08,656 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 09:28:08,659 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:28:08,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:28:08,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:28:08,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:28:08,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:28:08,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:28:08,680 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:28:08,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:28:08,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:28:08,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:28:08,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:28:08,685 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:28:08,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:28:08,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:28:08,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 09:28:08,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:28:08,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 09:28:08,689 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:28:08,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:28:08,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:28:08,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:28:08,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:28:08,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 09:28:08,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:28:08,691 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:28:08,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:28:08,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:28:08,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:28:08,691 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:28:08,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:28:08,692 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:28:08,692 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:28:08,692 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:28:08,692 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:28:08,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:28:08,693 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:28:08,693 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:28:08,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:28:08,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:28:08,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2024-11-20 09:28:08,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:28:08,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:28:08,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:28:08,924 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:28:08,925 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:28:08,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2024-11-20 09:28:10,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:28:10,338 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:28:10,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2024-11-20 09:28:10,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74a95f428/ad2138dfc84b4ff980f144666673946f/FLAG0c97cccb5 [2024-11-20 09:28:10,364 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74a95f428/ad2138dfc84b4ff980f144666673946f [2024-11-20 09:28:10,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:28:10,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:28:10,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:28:10,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:28:10,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:28:10,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661f7bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10, skipping insertion in model container [2024-11-20 09:28:10,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:28:10,579 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/safe034_tso.i[945,958] [2024-11-20 09:28:10,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:28:10,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:28:10,691 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/safe034_tso.i[945,958] [2024-11-20 09:28:10,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:28:10,753 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:28:10,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10 WrapperNode [2024-11-20 09:28:10,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:28:10,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:28:10,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:28:10,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:28:10,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,791 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-11-20 09:28:10,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:28:10,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:28:10,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:28:10,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:28:10,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,817 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 09:28:10,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,818 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,822 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:28:10,827 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:28:10,827 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:28:10,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:28:10,828 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (1/1) ... [2024-11-20 09:28:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:28:10,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:28:10,867 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 09:28:10,870 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 09:28:10,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 09:28:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:28:10,909 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-20 09:28:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-20 09:28:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-20 09:28:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-20 09:28:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-20 09:28:10,910 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-20 09:28:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:28:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 09:28:10,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:28:10,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:28:10,913 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 09:28:11,026 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:28:11,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:28:11,161 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 09:28:11,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:28:11,222 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:28:11,222 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:28:11,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:11 BoogieIcfgContainer [2024-11-20 09:28:11,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:28:11,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:28:11,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:28:11,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:28:11,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:10" (1/3) ... [2024-11-20 09:28:11,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f61f425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:11, skipping insertion in model container [2024-11-20 09:28:11,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:10" (2/3) ... [2024-11-20 09:28:11,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f61f425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:11, skipping insertion in model container [2024-11-20 09:28:11,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:11" (3/3) ... [2024-11-20 09:28:11,232 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2024-11-20 09:28:11,245 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:28:11,245 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:28:11,246 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 09:28:11,287 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 09:28:11,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2024-11-20 09:28:11,348 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-11-20 09:28:11,348 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:28:11,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-20 09:28:11,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2024-11-20 09:28:11,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-11-20 09:28:11,362 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:28:11,369 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;@17ae4a61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:28:11,370 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-20 09:28:11,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 09:28:11,383 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2024-11-20 09:28:11,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 09:28:11,383 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:11,384 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:28:11,384 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 09:28:11,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 313596758, now seen corresponding path program 1 times [2024-11-20 09:28:11,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:11,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081677416] [2024-11-20 09:28:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:11,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:11,830 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 09:28:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081677416] [2024-11-20 09:28:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081677416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:11,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:28:11,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102356966] [2024-11-20 09:28:11,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:11,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:28:11,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:11,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:28:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:28:11,883 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2024-11-20 09:28:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 09:28:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:11,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2024-11-20 09:28:11,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:12,166 INFO L124 PetriNetUnfolderBase]: 832/1663 cut-off events. [2024-11-20 09:28:12,167 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-20 09:28:12,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 1663 events. 832/1663 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11600 event pairs, 237 based on Foata normal form. 58/1702 useless extension candidates. Maximal degree in co-relation 3011. Up to 684 conditions per place. [2024-11-20 09:28:12,180 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 28 selfloop transitions, 5 changer transitions 31/80 dead transitions. [2024-11-20 09:28:12,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 80 transitions, 303 flow [2024-11-20 09:28:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:28:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:28:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-11-20 09:28:12,191 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7107142857142857 [2024-11-20 09:28:12,192 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 7 states and 199 transitions. [2024-11-20 09:28:12,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 80 transitions, 303 flow [2024-11-20 09:28:12,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 80 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 09:28:12,198 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 136 flow [2024-11-20 09:28:12,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2024-11-20 09:28:12,203 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-11-20 09:28:12,203 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 136 flow [2024-11-20 09:28:12,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 09:28:12,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:12,203 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:28:12,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:28:12,203 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 09:28:12,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1652018583, now seen corresponding path program 1 times [2024-11-20 09:28:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:12,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384483083] [2024-11-20 09:28:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:12,324 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 09:28:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384483083] [2024-11-20 09:28:12,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384483083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:12,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:12,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 09:28:12,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843877349] [2024-11-20 09:28:12,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:12,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:28:12,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:12,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:28:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:28:12,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-11-20 09:28:12,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 09:28:12,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:12,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-11-20 09:28:12,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:12,496 INFO L124 PetriNetUnfolderBase]: 963/1924 cut-off events. [2024-11-20 09:28:12,496 INFO L125 PetriNetUnfolderBase]: For 684/688 co-relation queries the response was YES. [2024-11-20 09:28:12,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4217 conditions, 1924 events. 963/1924 cut-off events. For 684/688 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13349 event pairs, 272 based on Foata normal form. 89/1870 useless extension candidates. Maximal degree in co-relation 4201. Up to 821 conditions per place. [2024-11-20 09:28:12,509 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 26 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-11-20 09:28:12,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 232 flow [2024-11-20 09:28:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 09:28:12,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 09:28:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-11-20 09:28:12,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75625 [2024-11-20 09:28:12,512 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 136 flow. Second operand 4 states and 121 transitions. [2024-11-20 09:28:12,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 232 flow [2024-11-20 09:28:12,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 218 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 09:28:12,522 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 160 flow [2024-11-20 09:28:12,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-20 09:28:12,523 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2024-11-20 09:28:12,523 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 160 flow [2024-11-20 09:28:12,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 09:28:12,523 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:12,524 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 09:28:12,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:28:12,524 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 09:28:12,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1409180353, now seen corresponding path program 1 times [2024-11-20 09:28:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142681912] [2024-11-20 09:28:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:12,621 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 09:28:12,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:12,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142681912] [2024-11-20 09:28:12,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142681912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:12,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:12,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:28:12,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417824268] [2024-11-20 09:28:12,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:12,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 09:28:12,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:12,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 09:28:12,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:28:12,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-11-20 09:28:12,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 09:28:12,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:12,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-11-20 09:28:12,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:12,806 INFO L124 PetriNetUnfolderBase]: 751/1545 cut-off events. [2024-11-20 09:28:12,806 INFO L125 PetriNetUnfolderBase]: For 780/1499 co-relation queries the response was YES. [2024-11-20 09:28:12,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3893 conditions, 1545 events. 751/1545 cut-off events. For 780/1499 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10111 event pairs, 80 based on Foata normal form. 108/1549 useless extension candidates. Maximal degree in co-relation 3875. Up to 628 conditions per place. [2024-11-20 09:28:12,816 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 33 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-11-20 09:28:12,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 305 flow [2024-11-20 09:28:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:28:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 09:28:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-20 09:28:12,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.765 [2024-11-20 09:28:12,819 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 160 flow. Second operand 5 states and 153 transitions. [2024-11-20 09:28:12,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 305 flow [2024-11-20 09:28:12,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 298 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 09:28:12,823 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 208 flow [2024-11-20 09:28:12,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-20 09:28:12,823 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2024-11-20 09:28:12,823 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 208 flow [2024-11-20 09:28:12,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 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 09:28:12,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:12,824 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] [2024-11-20 09:28:12,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 09:28:12,824 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 09:28:12,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:12,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1047392379, now seen corresponding path program 1 times [2024-11-20 09:28:12,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:12,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133665252] [2024-11-20 09:28:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:12,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:12,933 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 09:28:12,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:12,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133665252] [2024-11-20 09:28:12,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133665252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:12,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:12,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 09:28:12,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470612708] [2024-11-20 09:28:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:12,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:28:12,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:28:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:28:12,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 40 [2024-11-20 09:28:12,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 09:28:12,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:12,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 40 [2024-11-20 09:28:12,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:13,095 INFO L124 PetriNetUnfolderBase]: 587/1153 cut-off events. [2024-11-20 09:28:13,095 INFO L125 PetriNetUnfolderBase]: For 2021/3560 co-relation queries the response was YES. [2024-11-20 09:28:13,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3584 conditions, 1153 events. 587/1153 cut-off events. For 2021/3560 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6770 event pairs, 38 based on Foata normal form. 100/1157 useless extension candidates. Maximal degree in co-relation 3565. Up to 508 conditions per place. [2024-11-20 09:28:13,103 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 30 selfloop transitions, 11 changer transitions 2/65 dead transitions. [2024-11-20 09:28:13,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 343 flow [2024-11-20 09:28:13,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:28:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:28:13,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-11-20 09:28:13,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-11-20 09:28:13,105 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 208 flow. Second operand 6 states and 177 transitions. [2024-11-20 09:28:13,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 343 flow [2024-11-20 09:28:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 65 transitions, 322 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-20 09:28:13,110 INFO L231 Difference]: Finished difference. Result has 60 places, 47 transitions, 232 flow [2024-11-20 09:28:13,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=47} [2024-11-20 09:28:13,110 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-11-20 09:28:13,111 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 47 transitions, 232 flow [2024-11-20 09:28:13,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 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 09:28:13,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:13,111 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, 1, 1, 1, 1, 1] [2024-11-20 09:28:13,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 09:28:13,111 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 09:28:13,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 311353740, now seen corresponding path program 1 times [2024-11-20 09:28:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:13,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027650010] [2024-11-20 09:28:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:13,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:13,260 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 09:28:13,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027650010] [2024-11-20 09:28:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027650010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:13,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:13,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:28:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101183623] [2024-11-20 09:28:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:13,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:28:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:28:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:28:13,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 40 [2024-11-20 09:28:13,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 09:28:13,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:13,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 40 [2024-11-20 09:28:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:13,430 INFO L124 PetriNetUnfolderBase]: 674/1624 cut-off events. [2024-11-20 09:28:13,430 INFO L125 PetriNetUnfolderBase]: For 2704/2970 co-relation queries the response was YES. [2024-11-20 09:28:13,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4633 conditions, 1624 events. 674/1624 cut-off events. For 2704/2970 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12506 event pairs, 198 based on Foata normal form. 17/1402 useless extension candidates. Maximal degree in co-relation 4612. Up to 424 conditions per place. [2024-11-20 09:28:13,437 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 18 selfloop transitions, 1 changer transitions 17/65 dead transitions. [2024-11-20 09:28:13,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 360 flow [2024-11-20 09:28:13,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 09:28:13,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 09:28:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-11-20 09:28:13,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-20 09:28:13,439 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 232 flow. Second operand 6 states and 160 transitions. [2024-11-20 09:28:13,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 360 flow [2024-11-20 09:28:13,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 324 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-20 09:28:13,448 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 209 flow [2024-11-20 09:28:13,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2024-11-20 09:28:13,451 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-20 09:28:13,451 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 209 flow [2024-11-20 09:28:13,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 09:28:13,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 09:28:13,452 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, 1, 1, 1, 1, 1] [2024-11-20 09:28:13,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 09:28:13,452 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 09:28:13,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:28:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash -664237672, now seen corresponding path program 2 times [2024-11-20 09:28:13,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:28:13,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547625123] [2024-11-20 09:28:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:28:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:28:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:28:13,608 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 09:28:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:28:13,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547625123] [2024-11-20 09:28:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547625123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:28:13,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:28:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 09:28:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817737162] [2024-11-20 09:28:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:28:13,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 09:28:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:28:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 09:28:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 09:28:13,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-11-20 09:28:13,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 09:28:13,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 09:28:13,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-11-20 09:28:13,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 09:28:13,811 INFO L124 PetriNetUnfolderBase]: 586/1379 cut-off events. [2024-11-20 09:28:13,811 INFO L125 PetriNetUnfolderBase]: For 1180/1276 co-relation queries the response was YES. [2024-11-20 09:28:13,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1379 events. 586/1379 cut-off events. For 1180/1276 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9843 event pairs, 83 based on Foata normal form. 25/1289 useless extension candidates. Maximal degree in co-relation 3510. Up to 534 conditions per place. [2024-11-20 09:28:13,817 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2024-11-20 09:28:13,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 391 flow [2024-11-20 09:28:13,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 09:28:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 09:28:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-11-20 09:28:13,818 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-20 09:28:13,818 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 209 flow. Second operand 7 states and 178 transitions. [2024-11-20 09:28:13,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 391 flow [2024-11-20 09:28:13,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 386 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-20 09:28:13,827 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-11-20 09:28:13,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-11-20 09:28:13,828 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2024-11-20 09:28:13,828 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-11-20 09:28:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 09:28:13,831 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-20 09:28:13,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-20 09:28:13,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-20 09:28:13,832 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-20 09:28:13,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 09:28:13,832 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-11-20 09:28:13,834 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 09:28:13,835 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 09:28:13,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:28:13 BasicIcfg [2024-11-20 09:28:13,839 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 09:28:13,839 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 09:28:13,839 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 09:28:13,839 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 09:28:13,840 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:11" (3/4) ... [2024-11-20 09:28:13,841 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 09:28:13,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-20 09:28:13,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-20 09:28:13,844 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-20 09:28:13,847 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2024-11-20 09:28:13,847 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-20 09:28:13,847 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 09:28:13,847 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-20 09:28:13,920 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 09:28:13,920 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 09:28:13,920 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 09:28:13,921 INFO L158 Benchmark]: Toolchain (without parser) took 3554.42ms. Allocated memory was 151.0MB in the beginning and 249.6MB in the end (delta: 98.6MB). Free memory was 105.0MB in the beginning and 140.6MB in the end (delta: -35.6MB). Peak memory consumption was 64.8MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,921 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 09:28:13,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.59ms. Allocated memory is still 151.0MB. Free memory was 104.8MB in the beginning and 81.4MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,924 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.38ms. Allocated memory is still 151.0MB. Free memory was 81.4MB in the beginning and 79.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 09:28:13,924 INFO L158 Benchmark]: Boogie Preprocessor took 33.67ms. Allocated memory is still 151.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,925 INFO L158 Benchmark]: RCFGBuilder took 395.01ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 77.2MB in the beginning and 170.7MB in the end (delta: -93.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,925 INFO L158 Benchmark]: TraceAbstraction took 2614.17ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 170.7MB in the beginning and 145.9MB in the end (delta: 24.8MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,925 INFO L158 Benchmark]: Witness Printer took 81.25ms. Allocated memory is still 249.6MB. Free memory was 145.9MB in the beginning and 140.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-20 09:28:13,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 112.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.59ms. Allocated memory is still 151.0MB. Free memory was 104.8MB in the beginning and 81.4MB in the end (delta: 23.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.38ms. Allocated memory is still 151.0MB. Free memory was 81.4MB in the beginning and 79.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.67ms. Allocated memory is still 151.0MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.01ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 77.2MB in the beginning and 170.7MB in the end (delta: -93.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2614.17ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 170.7MB in the beginning and 145.9MB in the end (delta: 24.8MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 81.25ms. Allocated memory is still 249.6MB. Free memory was 145.9MB in the beginning and 140.6MB in the end (delta: 5.2MB). 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, 66 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: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 108 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 485 IncrementalHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 32 mSDtfsCounter, 485 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.9s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 131 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 09:28:13,944 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