./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:16:10,033 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:16:10,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:16:10,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:16:10,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:16:10,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:16:10,148 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:16:10,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:16:10,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:16:10,149 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:16:10,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:16:10,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:16:10,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:16:10,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:16:10,153 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:16:10,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:16:10,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:16:10,153 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:16:10,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:16:10,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:16:10,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:16:10,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:16:10,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:16:10,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:16:10,158 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:16:10,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:16:10,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:16:10,159 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:16:10,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:16:10,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:16:10,160 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:16:10,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:16:10,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:16:10,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:16:10,160 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:16:10,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:16:10,163 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:16:10,163 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a72b3b3683b5d2b2d35965fc1a3189152678e29fe154c9fbeb2d06d1447980e3 [2024-10-11 14:16:10,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:16:10,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:16:10,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:16:10,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:16:10,431 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:16:10,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:16:11,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:16:12,139 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:16:12,140 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:16:12,178 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b7857927a/2c4c30d727874c6599d64874689d35ad/FLAG20d3163ae [2024-10-11 14:16:12,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b7857927a/2c4c30d727874c6599d64874689d35ad [2024-10-11 14:16:12,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:16:12,474 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:16:12,475 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:16:12,475 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:16:12,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:16:12,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:12,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c9ef5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12, skipping insertion in model container [2024-10-11 14:16:12,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:12,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:16:12,680 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-11 14:16:12,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:16:12,877 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:16:12,890 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix040_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-11 14:16:12,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:16:12,973 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:16:12,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12 WrapperNode [2024-10-11 14:16:12,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:16:12,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:16:12,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:16:12,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:16:12,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,027 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-10-11 14:16:13,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:16:13,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:16:13,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:16:13,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:16:13,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,067 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:16:13,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:16:13,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:16:13,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:16:13,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:16:13,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (1/1) ... [2024-10-11 14:16:13,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:16:13,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:16:13,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:16:13,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:16:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:16:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:16:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:16:13,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:16:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:16:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:16:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:16:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:16:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-11 14:16:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-11 14:16:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:16:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:16:13,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:16:13,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:16:13,178 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:16:13,274 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:16:13,276 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:16:13,505 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:16:13,505 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:16:13,724 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:16:13,725 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:16:13,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:16:13 BoogieIcfgContainer [2024-10-11 14:16:13,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:16:13,726 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:16:13,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:16:13,730 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:16:13,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:16:12" (1/3) ... [2024-10-11 14:16:13,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22733cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:16:13, skipping insertion in model container [2024-10-11 14:16:13,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:16:12" (2/3) ... [2024-10-11 14:16:13,731 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22733cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:16:13, skipping insertion in model container [2024-10-11 14:16:13,731 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:16:13" (3/3) ... [2024-10-11 14:16:13,732 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:16:13,745 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:16:13,746 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:16:13,746 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:16:13,792 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:16:13,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-11 14:16:13,847 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-11 14:16:13,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:16:13,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-11 14:16:13,852 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-11 14:16:13,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-11 14:16:13,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:16:13,872 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18413bb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:16:13,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:16:13,876 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:16:13,878 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-11 14:16:13,878 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:16:13,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:13,878 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 14:16:13,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:13,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 11875706, now seen corresponding path program 1 times [2024-10-11 14:16:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290943350] [2024-10-11 14:16:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:13,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:14,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:14,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290943350] [2024-10-11 14:16:14,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290943350] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:14,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:14,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 14:16:14,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123755139] [2024-10-11 14:16:14,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:14,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:16:14,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:14,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:16:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:16:14,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-10-11 14:16:14,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:14,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:14,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-10-11 14:16:14,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:14,886 INFO L124 PetriNetUnfolderBase]: 2495/3975 cut-off events. [2024-10-11 14:16:14,886 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-11 14:16:14,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 3975 events. 2495/3975 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24867 event pairs, 1647 based on Foata normal form. 135/4048 useless extension candidates. Maximal degree in co-relation 7539. Up to 2779 conditions per place. [2024-10-11 14:16:14,919 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-10-11 14:16:14,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-10-11 14:16:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:16:14,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:16:14,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-11 14:16:14,929 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-10-11 14:16:14,930 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-10-11 14:16:14,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-10-11 14:16:14,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:16:14,937 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-11 14:16:14,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-11 14:16:14,943 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-11 14:16:14,943 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-11 14:16:14,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:14,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:14,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:14,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:16:14,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:14,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1594122599, now seen corresponding path program 1 times [2024-10-11 14:16:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947455758] [2024-10-11 14:16:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:15,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:15,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947455758] [2024-10-11 14:16:15,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947455758] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:15,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:16:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382364052] [2024-10-11 14:16:15,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:15,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:16:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:16:15,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:16:15,245 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-11 14:16:15,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:15,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:15,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-11 14:16:15,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:21,300 INFO L124 PetriNetUnfolderBase]: 38109/54300 cut-off events. [2024-10-11 14:16:21,301 INFO L125 PetriNetUnfolderBase]: For 2249/2249 co-relation queries the response was YES. [2024-10-11 14:16:21,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108077 conditions, 54300 events. 38109/54300 cut-off events. For 2249/2249 co-relation queries the response was YES. Maximal size of possible extension queue 2288. Compared 390053 event pairs, 8776 based on Foata normal form. 0/52840 useless extension candidates. Maximal degree in co-relation 108067. Up to 19638 conditions per place. [2024-10-11 14:16:21,804 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 47 selfloop transitions, 8 changer transitions 103/170 dead transitions. [2024-10-11 14:16:21,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 170 transitions, 686 flow [2024-10-11 14:16:21,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:16:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:16:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-10-11 14:16:21,806 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6755555555555556 [2024-10-11 14:16:21,807 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 304 transitions. [2024-10-11 14:16:21,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 170 transitions, 686 flow [2024-10-11 14:16:21,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 170 transitions, 668 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:16:21,821 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 204 flow [2024-10-11 14:16:21,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=204, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-10-11 14:16:21,822 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-11 14:16:21,822 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 204 flow [2024-10-11 14:16:21,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:21,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:21,823 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:16:21,824 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:21,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1240114744, now seen corresponding path program 1 times [2024-10-11 14:16:21,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:21,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808759629] [2024-10-11 14:16:21,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:22,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:22,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808759629] [2024-10-11 14:16:22,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808759629] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:22,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:22,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:16:22,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509568298] [2024-10-11 14:16:22,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:22,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:16:22,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:16:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:16:22,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-11 14:16:22,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:22,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:22,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-11 14:16:22,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:27,468 INFO L124 PetriNetUnfolderBase]: 28353/41256 cut-off events. [2024-10-11 14:16:27,469 INFO L125 PetriNetUnfolderBase]: For 60445/61278 co-relation queries the response was YES. [2024-10-11 14:16:27,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123435 conditions, 41256 events. 28353/41256 cut-off events. For 60445/61278 co-relation queries the response was YES. Maximal size of possible extension queue 1692. Compared 293079 event pairs, 3512 based on Foata normal form. 1095/42076 useless extension candidates. Maximal degree in co-relation 123417. Up to 15805 conditions per place. [2024-10-11 14:16:27,713 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 62 selfloop transitions, 9 changer transitions 102/185 dead transitions. [2024-10-11 14:16:27,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 185 transitions, 1192 flow [2024-10-11 14:16:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:16:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:16:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-10-11 14:16:27,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.636 [2024-10-11 14:16:27,716 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 204 flow. Second operand 10 states and 318 transitions. [2024-10-11 14:16:27,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 185 transitions, 1192 flow [2024-10-11 14:16:27,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 185 transitions, 1046 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-10-11 14:16:27,854 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 274 flow [2024-10-11 14:16:27,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2024-10-11 14:16:27,855 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-11 14:16:27,856 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 274 flow [2024-10-11 14:16:27,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:27,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:27,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:27,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:16:27,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:27,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1636801371, now seen corresponding path program 1 times [2024-10-11 14:16:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445075323] [2024-10-11 14:16:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445075323] [2024-10-11 14:16:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445075323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:28,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:28,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:16:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992275487] [2024-10-11 14:16:28,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:28,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:16:28,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:28,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:16:28,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:16:28,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-11 14:16:28,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 54 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:28,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:28,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-11 14:16:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:32,893 INFO L124 PetriNetUnfolderBase]: 26344/38216 cut-off events. [2024-10-11 14:16:32,893 INFO L125 PetriNetUnfolderBase]: For 95291/96363 co-relation queries the response was YES. [2024-10-11 14:16:33,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122949 conditions, 38216 events. 26344/38216 cut-off events. For 95291/96363 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 267084 event pairs, 4069 based on Foata normal form. 936/39074 useless extension candidates. Maximal degree in co-relation 122924. Up to 16623 conditions per place. [2024-10-11 14:16:33,262 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 67 selfloop transitions, 19 changer transitions 92/190 dead transitions. [2024-10-11 14:16:33,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 190 transitions, 1322 flow [2024-10-11 14:16:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:16:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:16:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-10-11 14:16:33,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.636 [2024-10-11 14:16:33,264 INFO L175 Difference]: Start difference. First operand has 75 places, 54 transitions, 274 flow. Second operand 10 states and 318 transitions. [2024-10-11 14:16:33,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 190 transitions, 1322 flow [2024-10-11 14:16:34,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 190 transitions, 1275 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-10-11 14:16:34,033 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 488 flow [2024-10-11 14:16:34,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=488, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2024-10-11 14:16:34,034 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-10-11 14:16:34,034 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 488 flow [2024-10-11 14:16:34,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:34,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:34,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:34,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:16:34,035 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:34,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -975734266, now seen corresponding path program 1 times [2024-10-11 14:16:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:34,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860786564] [2024-10-11 14:16:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:34,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:34,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860786564] [2024-10-11 14:16:34,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860786564] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:34,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:34,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:16:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855932999] [2024-10-11 14:16:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:34,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:16:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:34,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:16:34,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:16:34,255 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-11 14:16:34,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 488 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:34,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:34,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-11 14:16:34,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:38,894 INFO L124 PetriNetUnfolderBase]: 24537/35452 cut-off events. [2024-10-11 14:16:38,894 INFO L125 PetriNetUnfolderBase]: For 130108/130629 co-relation queries the response was YES. [2024-10-11 14:16:39,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126513 conditions, 35452 events. 24537/35452 cut-off events. For 130108/130629 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 241545 event pairs, 5420 based on Foata normal form. 733/36153 useless extension candidates. Maximal degree in co-relation 126480. Up to 16062 conditions per place. [2024-10-11 14:16:39,223 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 69 selfloop transitions, 29 changer transitions 78/188 dead transitions. [2024-10-11 14:16:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 188 transitions, 1484 flow [2024-10-11 14:16:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:16:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:16:39,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-10-11 14:16:39,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632 [2024-10-11 14:16:39,225 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 488 flow. Second operand 10 states and 316 transitions. [2024-10-11 14:16:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 188 transitions, 1484 flow [2024-10-11 14:16:39,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 188 transitions, 1408 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-10-11 14:16:39,748 INFO L231 Difference]: Finished difference. Result has 91 places, 74 transitions, 640 flow [2024-10-11 14:16:39,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=640, PETRI_PLACES=91, PETRI_TRANSITIONS=74} [2024-10-11 14:16:39,749 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2024-10-11 14:16:39,749 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 74 transitions, 640 flow [2024-10-11 14:16:39,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:39,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:39,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:39,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:16:39,750 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:39,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:39,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1195020695, now seen corresponding path program 1 times [2024-10-11 14:16:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:39,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056832305] [2024-10-11 14:16:39,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:39,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056832305] [2024-10-11 14:16:39,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056832305] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:39,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:39,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:16:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832494497] [2024-10-11 14:16:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:39,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:16:39,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:39,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:16:39,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:16:39,888 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-10-11 14:16:39,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 74 transitions, 640 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:39,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:39,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-10-11 14:16:39,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:45,878 INFO L124 PetriNetUnfolderBase]: 32685/48000 cut-off events. [2024-10-11 14:16:45,878 INFO L125 PetriNetUnfolderBase]: For 214137/214704 co-relation queries the response was YES. [2024-10-11 14:16:46,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174196 conditions, 48000 events. 32685/48000 cut-off events. For 214137/214704 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 357952 event pairs, 5515 based on Foata normal form. 909/48796 useless extension candidates. Maximal degree in co-relation 174157. Up to 17546 conditions per place. [2024-10-11 14:16:46,571 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 72 selfloop transitions, 31 changer transitions 84/199 dead transitions. [2024-10-11 14:16:46,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 199 transitions, 1712 flow [2024-10-11 14:16:46,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:16:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:16:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-10-11 14:16:46,572 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-10-11 14:16:46,573 INFO L175 Difference]: Start difference. First operand has 91 places, 74 transitions, 640 flow. Second operand 10 states and 315 transitions. [2024-10-11 14:16:46,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 199 transitions, 1712 flow [2024-10-11 14:16:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 199 transitions, 1628 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-10-11 14:16:49,128 INFO L231 Difference]: Finished difference. Result has 93 places, 77 transitions, 806 flow [2024-10-11 14:16:49,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=806, PETRI_PLACES=93, PETRI_TRANSITIONS=77} [2024-10-11 14:16:49,128 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2024-10-11 14:16:49,129 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 77 transitions, 806 flow [2024-10-11 14:16:49,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:49,129 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:49,129 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:49,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:16:49,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:49,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:49,130 INFO L85 PathProgramCache]: Analyzing trace with hash 17757803, now seen corresponding path program 1 times [2024-10-11 14:16:49,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:49,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306469475] [2024-10-11 14:16:49,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:49,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:49,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306469475] [2024-10-11 14:16:49,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306469475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:49,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:49,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:16:49,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993157827] [2024-10-11 14:16:49,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:49,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:16:49,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:16:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:16:49,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-11 14:16:49,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 77 transitions, 806 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:49,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:49,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-11 14:16:49,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:16:57,666 INFO L124 PetriNetUnfolderBase]: 48732/72815 cut-off events. [2024-10-11 14:16:57,666 INFO L125 PetriNetUnfolderBase]: For 185258/189896 co-relation queries the response was YES. [2024-10-11 14:16:58,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203725 conditions, 72815 events. 48732/72815 cut-off events. For 185258/189896 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 572738 event pairs, 8525 based on Foata normal form. 3520/74603 useless extension candidates. Maximal degree in co-relation 203685. Up to 37706 conditions per place. [2024-10-11 14:16:58,363 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 62 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2024-10-11 14:16:58,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 1138 flow [2024-10-11 14:16:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:16:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:16:58,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-11 14:16:58,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-10-11 14:16:58,365 INFO L175 Difference]: Start difference. First operand has 93 places, 77 transitions, 806 flow. Second operand 4 states and 141 transitions. [2024-10-11 14:16:58,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 1138 flow [2024-10-11 14:16:59,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 1122 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-10-11 14:16:59,320 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 836 flow [2024-10-11 14:16:59,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=836, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-10-11 14:16:59,321 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 31 predicate places. [2024-10-11 14:16:59,321 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 836 flow [2024-10-11 14:16:59,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:59,322 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:16:59,322 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:16:59,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:16:59,322 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:16:59,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:16:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash -790725680, now seen corresponding path program 1 times [2024-10-11 14:16:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:16:59,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83157853] [2024-10-11 14:16:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:16:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:16:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:16:59,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:16:59,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:16:59,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83157853] [2024-10-11 14:16:59,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83157853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:16:59,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:16:59,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:16:59,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103257675] [2024-10-11 14:16:59,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:16:59,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:16:59,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:16:59,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:16:59,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:16:59,544 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-11 14:16:59,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 836 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:16:59,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:16:59,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-11 14:16:59,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand