./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-theta/wsc.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version da043454 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-theta/wsc.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5d2cea530a9e3855b73e6a32a34f817615c3537f9111a0418ba35ae88ddb949 --- Real Ultimate output --- This is Ultimate 0.3.0-wip.fs.system-includes-da04345-m [2025-04-29 10:58:31,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-29 10:58:31,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-29 10:58:31,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-29 10:58:31,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-29 10:58:31,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-29 10:58:31,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-29 10:58:31,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-29 10:58:31,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-29 10:58:31,266 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-29 10:58:31,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-29 10:58:31,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-29 10:58:31,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-29 10:58:31,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-29 10:58:31,267 INFO L153 SettingsManager]: * Use SBE=true [2025-04-29 10:58:31,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-29 10:58:31,268 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-29 10:58:31,269 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 10:58:31,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:58:31,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:58:31,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-29 10:58:31,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-29 10:58:31,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-29 10:58:31,271 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> b5d2cea530a9e3855b73e6a32a34f817615c3537f9111a0418ba35ae88ddb949 [2025-04-29 10:58:31,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-29 10:58:31,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-29 10:58:31,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-29 10:58:31,478 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-29 10:58:31,478 INFO L274 PluginConnector]: CDTParser initialized [2025-04-29 10:58:31,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-theta/wsc.c [2025-04-29 10:58:32,749 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eb50061/8ae07a7618d7426d8067b48e69a659d1/FLAG7deaad311 [2025-04-29 10:58:32,941 INFO L389 CDTParser]: Found 1 translation units. [2025-04-29 10:58:32,942 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.c [2025-04-29 10:58:32,943 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 10:58:32,943 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 10:58:32,943 WARN L117 ultiparseSymbolTable]: System include stdatomic.h could not be resolved by CDT -- only built-in system includes are available. [2025-04-29 10:58:32,950 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eb50061/8ae07a7618d7426d8067b48e69a659d1/FLAG7deaad311 [2025-04-29 10:58:33,750 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39eb50061/8ae07a7618d7426d8067b48e69a659d1 [2025-04-29 10:58:33,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-29 10:58:33,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-29 10:58:33,754 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-29 10:58:33,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-29 10:58:33,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-29 10:58:33,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:33,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525b9b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33, skipping insertion in model container [2025-04-29 10:58:33,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:33,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-29 10:58:33,939 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.c[2007,2020] [2025-04-29 10:58:33,943 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 10:58:33,949 INFO L200 MainTranslator]: Completed pre-run [2025-04-29 10:58:33,975 WARN L117 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-theta/wsc.c[2007,2020] [2025-04-29 10:58:33,980 INFO L211 PostProcessor]: Analyzing one entry point: main [2025-04-29 10:58:33,993 INFO L204 MainTranslator]: Completed translation [2025-04-29 10:58:33,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33 WrapperNode [2025-04-29 10:58:33,993 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-29 10:58:33,994 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-29 10:58:33,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-29 10:58:33,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-29 10:58:34,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,027 INFO L138 Inliner]: procedures = 13, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 112 [2025-04-29 10:58:34,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-29 10:58:34,029 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-29 10:58:34,029 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-29 10:58:34,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-29 10:58:34,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,036 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,048 INFO L175 MemorySlicer]: No memory access in input program. [2025-04-29 10:58:34,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,048 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,051 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,052 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,053 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,056 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-29 10:58:34,057 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-29 10:58:34,057 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-29 10:58:34,057 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-29 10:58:34,058 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (1/1) ... [2025-04-29 10:58:34,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-29 10:58:34,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-29 10:58:34,080 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) [2025-04-29 10:58:34,082 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 [2025-04-29 10:58:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-29 10:58:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-29 10:58:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure f0 [2025-04-29 10:58:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure f0 [2025-04-29 10:58:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-04-29 10:58:34,097 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-04-29 10:58:34,097 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-04-29 10:58:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-04-29 10:58:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure f3 [2025-04-29 10:58:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure f3 [2025-04-29 10:58:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure f4 [2025-04-29 10:58:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure f4 [2025-04-29 10:58:34,098 INFO L130 BoogieDeclarations]: Found specification of procedure f5 [2025-04-29 10:58:34,098 INFO L138 BoogieDeclarations]: Found implementation of procedure f5 [2025-04-29 10:58:34,099 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-29 10:58:34,157 INFO L234 CfgBuilder]: Building ICFG [2025-04-29 10:58:34,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-29 10:58:34,299 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-29 10:58:34,299 INFO L283 CfgBuilder]: Performing block encoding [2025-04-29 10:58:34,377 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-29 10:58:34,378 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-29 10:58:34,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:58:34 BoogieIcfgContainer [2025-04-29 10:58:34,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-29 10:58:34,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-29 10:58:34,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-29 10:58:34,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-29 10:58:34,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.04 10:58:33" (1/3) ... [2025-04-29 10:58:34,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bc6b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 10:58:34, skipping insertion in model container [2025-04-29 10:58:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.04 10:58:33" (2/3) ... [2025-04-29 10:58:34,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56bc6b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.04 10:58:34, skipping insertion in model container [2025-04-29 10:58:34,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:58:34" (3/3) ... [2025-04-29 10:58:34,388 INFO L128 eAbstractionObserver]: Analyzing ICFG wsc.c [2025-04-29 10:58:34,398 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-29 10:58:34,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG wsc.c that has 7 procedures, 50 locations, 43 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-29 10:58:34,400 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-29 10:58:34,449 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-04-29 10:58:34,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 49 transitions, 140 flow [2025-04-29 10:58:34,508 INFO L116 PetriNetUnfolderBase]: 0/43 cut-off events. [2025-04-29 10:58:34,509 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-29 10:58:34,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 43 events. 0/43 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-29 10:58:34,511 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 49 transitions, 140 flow [2025-04-29 10:58:34,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 42 transitions, 120 flow [2025-04-29 10:58:34,519 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-29 10:58:34,527 INFO L340 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;@6cc798fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-29 10:58:34,527 INFO L341 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-04-29 10:58:34,539 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-29 10:58:34,540 INFO L116 PetriNetUnfolderBase]: 0/41 cut-off events. [2025-04-29 10:58:34,540 INFO L117 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-04-29 10:58:34,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:34,541 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:34,541 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:34,544 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash -311942530, now seen corresponding path program 1 times [2025-04-29 10:58:34,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:34,550 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253016608] [2025-04-29 10:58:34,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-29 10:58:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:34,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:34,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:34,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 10:58:34,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:34,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:34,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:34,816 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253016608] [2025-04-29 10:58:34,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253016608] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:34,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 10:58:34,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451081720] [2025-04-29 10:58:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:34,824 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:34,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:34,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:34,851 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:34,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:34,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:34,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:34,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:35,843 INFO L116 PetriNetUnfolderBase]: 7314/10487 cut-off events. [2025-04-29 10:58:35,844 INFO L117 PetriNetUnfolderBase]: For 1083/1083 co-relation queries the response was YES. [2025-04-29 10:58:35,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21076 conditions, 10487 events. 7314/10487 cut-off events. For 1083/1083 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 63689 event pairs, 5496 based on Foata normal form. 24/10494 useless extension candidates. Maximal degree in co-relation 20723. Up to 9584 conditions per place. [2025-04-29 10:58:35,924 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 39 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2025-04-29 10:58:35,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 238 flow [2025-04-29 10:58:35,926 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-04-29 10:58:35,934 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-04-29 10:58:35,935 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 120 flow. Second operand 3 states and 97 transitions. [2025-04-29 10:58:35,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 238 flow [2025-04-29 10:58:35,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-04-29 10:58:35,949 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 121 flow [2025-04-29 10:58:35,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2025-04-29 10:58:35,953 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -9 predicate places. [2025-04-29 10:58:35,954 INFO L485 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 121 flow [2025-04-29 10:58:35,954 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:35,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:35,954 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:35,954 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-29 10:58:35,954 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:35,955 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:35,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1967285594, now seen corresponding path program 2 times [2025-04-29 10:58:35,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:35,955 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979290824] [2025-04-29 10:58:35,955 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 10:58:35,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:35,967 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:35,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:35,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 10:58:35,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:36,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:36,049 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979290824] [2025-04-29 10:58:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979290824] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209865326] [2025-04-29 10:58:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:36,050 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:36,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:36,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:36,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:36,053 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:36,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:36,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:36,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:36,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:36,879 INFO L116 PetriNetUnfolderBase]: 7944/11899 cut-off events. [2025-04-29 10:58:36,879 INFO L117 PetriNetUnfolderBase]: For 2803/2803 co-relation queries the response was YES. [2025-04-29 10:58:36,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26176 conditions, 11899 events. 7944/11899 cut-off events. For 2803/2803 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 80170 event pairs, 2952 based on Foata normal form. 1063/12733 useless extension candidates. Maximal degree in co-relation 18441. Up to 6524 conditions per place. [2025-04-29 10:58:36,930 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 49 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2025-04-29 10:58:36,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 290 flow [2025-04-29 10:58:36,931 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2025-04-29 10:58:36,935 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7210884353741497 [2025-04-29 10:58:36,935 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 121 flow. Second operand 3 states and 106 transitions. [2025-04-29 10:58:36,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 290 flow [2025-04-29 10:58:36,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 287 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 10:58:36,937 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 164 flow [2025-04-29 10:58:36,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2025-04-29 10:58:36,942 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -6 predicate places. [2025-04-29 10:58:36,942 INFO L485 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 164 flow [2025-04-29 10:58:36,942 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:36,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:36,943 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:36,943 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-29 10:58:36,943 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:36,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash -847340706, now seen corresponding path program 3 times [2025-04-29 10:58:36,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:36,943 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849032654] [2025-04-29 10:58:36,944 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-29 10:58:36,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:36,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:36,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:36,981 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-29 10:58:36,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:37,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:37,032 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849032654] [2025-04-29 10:58:37,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849032654] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:37,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:37,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:37,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517227846] [2025-04-29 10:58:37,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:37,033 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:37,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:37,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:37,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:37,038 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:37,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:37,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:37,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:37,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:38,027 INFO L116 PetriNetUnfolderBase]: 12428/17966 cut-off events. [2025-04-29 10:58:38,027 INFO L117 PetriNetUnfolderBase]: For 11790/12206 co-relation queries the response was YES. [2025-04-29 10:58:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44035 conditions, 17966 events. 12428/17966 cut-off events. For 11790/12206 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 117039 event pairs, 6450 based on Foata normal form. 470/18025 useless extension candidates. Maximal degree in co-relation 15126. Up to 10561 conditions per place. [2025-04-29 10:58:38,099 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 49 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2025-04-29 10:58:38,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 331 flow [2025-04-29 10:58:38,100 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2025-04-29 10:58:38,101 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2025-04-29 10:58:38,101 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 164 flow. Second operand 3 states and 101 transitions. [2025-04-29 10:58:38,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 331 flow [2025-04-29 10:58:38,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 301 flow, removed 8 selfloop flow, removed 2 redundant places. [2025-04-29 10:58:38,111 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 154 flow [2025-04-29 10:58:38,111 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2025-04-29 10:58:38,112 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2025-04-29 10:58:38,112 INFO L485 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 154 flow [2025-04-29 10:58:38,112 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:38,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:38,112 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:38,112 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-29 10:58:38,113 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:38,113 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1712196702, now seen corresponding path program 4 times [2025-04-29 10:58:38,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:38,113 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648731355] [2025-04-29 10:58:38,113 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-29 10:58:38,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:38,121 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-04-29 10:58:38,129 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:38,130 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-04-29 10:58:38,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:38,173 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648731355] [2025-04-29 10:58:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648731355] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:38,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:38,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975732406] [2025-04-29 10:58:38,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:38,173 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:38,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:38,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:38,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:38,176 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:38,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:38,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:39,244 INFO L116 PetriNetUnfolderBase]: 16740/24592 cut-off events. [2025-04-29 10:58:39,246 INFO L117 PetriNetUnfolderBase]: For 9457/9614 co-relation queries the response was YES. [2025-04-29 10:58:39,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57598 conditions, 24592 events. 16740/24592 cut-off events. For 9457/9614 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 171061 event pairs, 7319 based on Foata normal form. 1029/25205 useless extension candidates. Maximal degree in co-relation 32020. Up to 12025 conditions per place. [2025-04-29 10:58:39,371 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 55 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2025-04-29 10:58:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 341 flow [2025-04-29 10:58:39,371 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:39,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2025-04-29 10:58:39,374 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-04-29 10:58:39,375 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 154 flow. Second operand 3 states and 105 transitions. [2025-04-29 10:58:39,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 341 flow [2025-04-29 10:58:39,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 10:58:39,402 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 164 flow [2025-04-29 10:58:39,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2025-04-29 10:58:39,403 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2025-04-29 10:58:39,404 INFO L485 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 164 flow [2025-04-29 10:58:39,404 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:39,404 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:39,405 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:39,405 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-29 10:58:39,405 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:39,406 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:39,406 INFO L85 PathProgramCache]: Analyzing trace with hash -265757138, now seen corresponding path program 5 times [2025-04-29 10:58:39,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:39,406 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455247704] [2025-04-29 10:58:39,406 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-29 10:58:39,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:39,420 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:39,430 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:39,430 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 10:58:39,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:39,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:39,480 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455247704] [2025-04-29 10:58:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455247704] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362601739] [2025-04-29 10:58:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:39,481 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:39,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:39,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:39,483 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:39,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:39,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:39,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:39,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:40,172 INFO L116 PetriNetUnfolderBase]: 9521/15503 cut-off events. [2025-04-29 10:58:40,173 INFO L117 PetriNetUnfolderBase]: For 6367/6642 co-relation queries the response was YES. [2025-04-29 10:58:40,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36116 conditions, 15503 events. 9521/15503 cut-off events. For 6367/6642 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 117421 event pairs, 4139 based on Foata normal form. 1010/16251 useless extension candidates. Maximal degree in co-relation 16022. Up to 6931 conditions per place. [2025-04-29 10:58:40,221 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 49 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2025-04-29 10:58:40,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 65 transitions, 305 flow [2025-04-29 10:58:40,223 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:40,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-04-29 10:58:40,225 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.7074829931972789 [2025-04-29 10:58:40,225 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 164 flow. Second operand 3 states and 104 transitions. [2025-04-29 10:58:40,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 65 transitions, 305 flow [2025-04-29 10:58:40,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 10:58:40,239 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 154 flow [2025-04-29 10:58:40,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2025-04-29 10:58:40,240 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-04-29 10:58:40,242 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 154 flow [2025-04-29 10:58:40,242 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:40,242 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:40,242 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:40,242 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-29 10:58:40,242 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:40,243 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1604514368, now seen corresponding path program 6 times [2025-04-29 10:58:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:40,243 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23913253] [2025-04-29 10:58:40,243 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-29 10:58:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:40,255 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:40,262 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:40,263 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-29 10:58:40,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:40,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:40,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:40,312 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23913253] [2025-04-29 10:58:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23913253] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:40,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:40,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:40,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323808723] [2025-04-29 10:58:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:40,312 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:40,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:40,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:40,315 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:40,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:40,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:40,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:40,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:41,198 INFO L116 PetriNetUnfolderBase]: 13152/19880 cut-off events. [2025-04-29 10:58:41,201 INFO L117 PetriNetUnfolderBase]: For 7677/7778 co-relation queries the response was YES. [2025-04-29 10:58:41,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47040 conditions, 19880 events. 13152/19880 cut-off events. For 7677/7778 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 140737 event pairs, 8533 based on Foata normal form. 716/20079 useless extension candidates. Maximal degree in co-relation 16033. Up to 12794 conditions per place. [2025-04-29 10:58:41,256 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 45 selfloop transitions, 2 changer transitions 3/62 dead transitions. [2025-04-29 10:58:41,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 62 transitions, 298 flow [2025-04-29 10:58:41,257 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2025-04-29 10:58:41,258 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.673469387755102 [2025-04-29 10:58:41,258 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 154 flow. Second operand 3 states and 99 transitions. [2025-04-29 10:58:41,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 62 transitions, 298 flow [2025-04-29 10:58:41,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-04-29 10:58:41,274 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 147 flow [2025-04-29 10:58:41,274 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2025-04-29 10:58:41,276 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2025-04-29 10:58:41,276 INFO L485 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 147 flow [2025-04-29 10:58:41,276 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:41,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:41,277 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:41,277 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-29 10:58:41,277 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:41,277 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1579895610, now seen corresponding path program 7 times [2025-04-29 10:58:41,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:41,278 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084372624] [2025-04-29 10:58:41,278 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-04-29 10:58:41,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:41,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:41,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:41,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-29 10:58:41,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:41,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:41,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:41,399 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084372624] [2025-04-29 10:58:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084372624] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:41,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:41,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-04-29 10:58:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642681601] [2025-04-29 10:58:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:41,404 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:41,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:41,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:41,407 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:41,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:41,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:41,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:41,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:41,926 INFO L116 PetriNetUnfolderBase]: 7785/12035 cut-off events. [2025-04-29 10:58:41,927 INFO L117 PetriNetUnfolderBase]: For 4695/4715 co-relation queries the response was YES. [2025-04-29 10:58:41,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29076 conditions, 12035 events. 7785/12035 cut-off events. For 4695/4715 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 77946 event pairs, 4671 based on Foata normal form. 12/11790 useless extension candidates. Maximal degree in co-relation 14846. Up to 11025 conditions per place. [2025-04-29 10:58:41,953 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 40 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2025-04-29 10:58:41,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 268 flow [2025-04-29 10:58:41,954 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2025-04-29 10:58:41,954 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2025-04-29 10:58:41,955 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 147 flow. Second operand 3 states and 95 transitions. [2025-04-29 10:58:41,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 268 flow [2025-04-29 10:58:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-29 10:58:41,958 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 158 flow [2025-04-29 10:58:41,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2025-04-29 10:58:41,958 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2025-04-29 10:58:41,958 INFO L485 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 158 flow [2025-04-29 10:58:41,959 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:41,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-29 10:58:41,959 INFO L206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-29 10:58:41,959 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-04-29 10:58:41,959 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-04-29 10:58:41,959 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-29 10:58:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1164056768, now seen corresponding path program 8 times [2025-04-29 10:58:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-29 10:58:41,959 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910005112] [2025-04-29 10:58:41,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-29 10:58:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-29 10:58:41,965 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 1 equivalence classes. [2025-04-29 10:58:41,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-04-29 10:58:41,968 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-29 10:58:41,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-29 10:58:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-29 10:58:41,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-29 10:58:41,992 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910005112] [2025-04-29 10:58:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910005112] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-29 10:58:41,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-29 10:58:41,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-04-29 10:58:41,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641636834] [2025-04-29 10:58:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-29 10:58:41,993 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-04-29 10:58:41,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-29 10:58:41,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-04-29 10:58:41,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-04-29 10:58:41,998 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2025-04-29 10:58:41,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:41,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-29 10:58:41,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2025-04-29 10:58:41,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-29 10:58:42,473 INFO L116 PetriNetUnfolderBase]: 7717/11446 cut-off events. [2025-04-29 10:58:42,473 INFO L117 PetriNetUnfolderBase]: For 6103/6398 co-relation queries the response was YES. [2025-04-29 10:58:42,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28678 conditions, 11446 events. 7717/11446 cut-off events. For 6103/6398 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 71182 event pairs, 4197 based on Foata normal form. 480/11653 useless extension candidates. Maximal degree in co-relation 13417. Up to 5995 conditions per place. [2025-04-29 10:58:42,495 INFO L140 encePairwiseOnDemand]: 47/49 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-04-29 10:58:42,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 268 flow [2025-04-29 10:58:42,495 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-04-29 10:58:42,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-04-29 10:58:42,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-04-29 10:58:42,496 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2025-04-29 10:58:42,496 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 158 flow. Second operand 3 states and 93 transitions. [2025-04-29 10:58:42,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 268 flow [2025-04-29 10:58:42,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 263 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-04-29 10:58:42,498 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2025-04-29 10:58:42,498 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2025-04-29 10:58:42,499 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -2 predicate places. [2025-04-29 10:58:42,499 INFO L485 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2025-04-29 10:58:42,499 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2025-04-29 10:58:42,501 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-04-29 10:58:42,502 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2025-04-29 10:58:42,502 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-04-29 10:58:42,503 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-04-29 10:58:42,503 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-04-29 10:58:42,503 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-04-29 10:58:42,503 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2025-04-29 10:58:42,503 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-04-29 10:58:42,503 INFO L422 BasicCegarLoop]: Path program histogram: [8] [2025-04-29 10:58:42,505 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-29 10:58:42,505 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-29 10:58:42,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.04 10:58:42 BasicIcfg [2025-04-29 10:58:42,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-29 10:58:42,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-04-29 10:58:42,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-04-29 10:58:42,510 INFO L274 PluginConnector]: Witness Printer initialized [2025-04-29 10:58:42,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.04 10:58:34" (3/4) ... [2025-04-29 10:58:42,512 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f0 [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f3 [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f4 [2025-04-29 10:58:42,515 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure f5 [2025-04-29 10:58:42,517 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2025-04-29 10:58:42,517 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-04-29 10:58:42,517 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-04-29 10:58:42,517 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-04-29 10:58:42,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-04-29 10:58:42,569 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-04-29 10:58:42,569 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-04-29 10:58:42,570 INFO L158 Benchmark]: Toolchain (without parser) took 8817.32ms. Allocated memory was 142.6MB in the beginning and 838.9MB in the end (delta: 696.3MB). Free memory was 114.1MB in the beginning and 411.0MB in the end (delta: -297.0MB). Peak memory consumption was 394.0MB. Max. memory is 16.1GB. [2025-04-29 10:58:42,570 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:58:42,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.12ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 99.5MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-29 10:58:42,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.03ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:58:42,571 INFO L158 Benchmark]: Boogie Preprocessor took 27.92ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-29 10:58:42,571 INFO L158 Benchmark]: RCFGBuilder took 320.78ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 68.7MB in the end (delta: 27.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-29 10:58:42,571 INFO L158 Benchmark]: TraceAbstraction took 8130.48ms. Allocated memory was 142.6MB in the beginning and 838.9MB in the end (delta: 696.3MB). Free memory was 68.2MB in the beginning and 419.4MB in the end (delta: -351.2MB). Peak memory consumption was 645.7MB. Max. memory is 16.1GB. [2025-04-29 10:58:42,571 INFO L158 Benchmark]: Witness Printer took 59.21ms. Allocated memory is still 838.9MB. Free memory was 419.4MB in the beginning and 411.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-29 10:58:42,572 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 123.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.12ms. Allocated memory is still 142.6MB. Free memory was 114.1MB in the beginning and 99.5MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.03ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 97.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.92ms. Allocated memory is still 142.6MB. Free memory was 97.6MB in the beginning and 96.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 320.78ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 68.7MB in the end (delta: 27.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8130.48ms. Allocated memory was 142.6MB in the beginning and 838.9MB in the end (delta: 696.3MB). Free memory was 68.2MB in the beginning and 419.4MB in the end (delta: -351.2MB). Peak memory consumption was 645.7MB. Max. memory is 16.1GB. * Witness Printer took 59.21ms. Allocated memory is still 838.9MB. Free memory was 419.4MB in the beginning and 411.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: 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 13 procedures, 84 locations, 83 edges, 7 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: 8.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 104 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 524 IncrementalHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 6 mSDtfsCounter, 524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=2, InterpolantAutomatonStates: 24, 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, 0.5s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 452 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-29 10:58:42,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE