./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/mix055_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/mix055_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 b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:17:02,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:17:02,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:17:02,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:17:02,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:17:02,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:17:02,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:17:02,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:17:02,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:17:02,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:17:02,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:17:02,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:17:02,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:17:02,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:17:02,766 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:17:02,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:17:02,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:17:02,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:17:02,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:17:02,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:17:02,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:17:02,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:17:02,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:17:02,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:17:02,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:17:02,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:17:02,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:17:02,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:17:02,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:17:02,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:17:02,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:17:02,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:17:02,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:17:02,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:17:02,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:17:02,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:17:02,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:17:02,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:17:02,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:17:02,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:17:02,775 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:17:02,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:17:02,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8efebf87dc67f98045ac231dc43d6a61f436e058244f16134f1d46d3b696c80 [2024-10-11 14:17:03,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:17:03,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:17:03,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:17:03,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:17:03,079 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:17:03,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:17:04,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:17:04,733 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:17:04,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:17:04,756 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b07578931/a537eb50553e4a23bc7f9c2c09895421/FLAG65a025800 [2024-10-11 14:17:04,770 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b07578931/a537eb50553e4a23bc7f9c2c09895421 [2024-10-11 14:17:04,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:17:04,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:17:04,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:17:04,777 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:17:04,782 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:17:04,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:17:04" (1/1) ... [2024-10-11 14:17:04,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4c1bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:04, skipping insertion in model container [2024-10-11 14:17:04,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:17:04" (1/1) ... [2024-10-11 14:17:04,835 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:17:05,054 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/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-11 14:17:05,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:17:05,299 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:17:05,314 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/mix055_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-11 14:17:05,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:17:05,424 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:17:05,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05 WrapperNode [2024-10-11 14:17:05,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:17:05,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:17:05,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:17:05,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:17:05,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,499 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2024-10-11 14:17:05,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:17:05,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:17:05,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:17:05,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:17:05,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,543 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 14:17:05,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,569 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,575 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:17:05,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:17:05,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:17:05,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:17:05,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (1/1) ... [2024-10-11 14:17:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:17:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:17:05,613 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 14:17:05,617 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 14:17:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:17:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:17:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:17:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:17:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:17:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:17:05,671 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:17:05,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:17:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-11 14:17:05,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-11 14:17:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:17:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:17:05,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:17:05,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:17:05,675 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 14:17:05,820 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:17:05,821 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:17:06,196 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:17:06,197 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:17:06,434 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:17:06,435 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:17:06,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:17:06 BoogieIcfgContainer [2024-10-11 14:17:06,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:17:06,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:17:06,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:17:06,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:17:06,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:17:04" (1/3) ... [2024-10-11 14:17:06,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9ae2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:17:06, skipping insertion in model container [2024-10-11 14:17:06,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:17:05" (2/3) ... [2024-10-11 14:17:06,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e9ae2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:17:06, skipping insertion in model container [2024-10-11 14:17:06,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:17:06" (3/3) ... [2024-10-11 14:17:06,446 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-10-11 14:17:06,464 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:17:06,464 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:17:06,464 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:17:06,533 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:17:06,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 48 transitions, 112 flow [2024-10-11 14:17:06,605 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-10-11 14:17:06,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:17:06,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-10-11 14:17:06,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 48 transitions, 112 flow [2024-10-11 14:17:06,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 44 transitions, 100 flow [2024-10-11 14:17:06,627 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:17:06,636 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;@72e480b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:17:06,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:17:06,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:17:06,643 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-11 14:17:06,643 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:17:06,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:06,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 14:17:06,645 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 14:17:06,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 12312705, now seen corresponding path program 1 times [2024-10-11 14:17:06,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:06,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440928723] [2024-10-11 14:17:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:07,091 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 14:17:07,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:07,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440928723] [2024-10-11 14:17:07,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440928723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:07,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:07,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 14:17:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363143861] [2024-10-11 14:17:07,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:07,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:17:07,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:07,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:17:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:17:07,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 48 [2024-10-11 14:17:07,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:17:07,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:07,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 48 [2024-10-11 14:17:07,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:08,010 INFO L124 PetriNetUnfolderBase]: 2495/4127 cut-off events. [2024-10-11 14:17:08,010 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-11 14:17:08,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 4127 events. 2495/4127 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28758 event pairs, 443 based on Foata normal form. 135/4199 useless extension candidates. Maximal degree in co-relation 7691. Up to 2779 conditions per place. [2024-10-11 14:17:08,042 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 37 selfloop transitions, 2 changer transitions 2/60 dead transitions. [2024-10-11 14:17:08,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 223 flow [2024-10-11 14:17:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:17:08,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:17:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-11 14:17:08,054 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-10-11 14:17:08,055 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 100 flow. Second operand 3 states and 113 transitions. [2024-10-11 14:17:08,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 223 flow [2024-10-11 14:17:08,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:17:08,064 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 94 flow [2024-10-11 14:17:08,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-10-11 14:17:08,071 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2024-10-11 14:17:08,071 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 94 flow [2024-10-11 14:17:08,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 14:17:08,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:08,072 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:17:08,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:17:08,072 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 14:17:08,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -285260819, now seen corresponding path program 1 times [2024-10-11 14:17:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:08,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510079412] [2024-10-11 14:17:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:08,419 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 14:17:08,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:08,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510079412] [2024-10-11 14:17:08,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510079412] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:08,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:08,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:17:08,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712777104] [2024-10-11 14:17:08,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:08,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:17:08,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:17:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:17:08,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 14:17:08,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 14:17:08,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:08,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 14:17:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:13,850 INFO L124 PetriNetUnfolderBase]: 30766/43987 cut-off events. [2024-10-11 14:17:13,850 INFO L125 PetriNetUnfolderBase]: For 1952/1952 co-relation queries the response was YES. [2024-10-11 14:17:13,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87740 conditions, 43987 events. 30766/43987 cut-off events. For 1952/1952 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 311206 event pairs, 7359 based on Foata normal form. 0/42878 useless extension candidates. Maximal degree in co-relation 87730. Up to 14967 conditions per place. [2024-10-11 14:17:14,251 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 46 selfloop transitions, 7 changer transitions 97/161 dead transitions. [2024-10-11 14:17:14,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 161 transitions, 652 flow [2024-10-11 14:17:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:17:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:17:14,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-10-11 14:17:14,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6643518518518519 [2024-10-11 14:17:14,255 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 9 states and 287 transitions. [2024-10-11 14:17:14,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 161 transitions, 652 flow [2024-10-11 14:17:14,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 161 transitions, 634 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:17:14,264 INFO L231 Difference]: Finished difference. Result has 66 places, 46 transitions, 186 flow [2024-10-11 14:17:14,265 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=186, PETRI_PLACES=66, PETRI_TRANSITIONS=46} [2024-10-11 14:17:14,266 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2024-10-11 14:17:14,266 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 46 transitions, 186 flow [2024-10-11 14:17:14,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 14:17:14,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:14,266 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 14:17:14,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:17:14,267 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 14:17:14,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1474582094, now seen corresponding path program 1 times [2024-10-11 14:17:14,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:14,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407083701] [2024-10-11 14:17:14,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:14,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:14,483 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 14:17:14,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407083701] [2024-10-11 14:17:14,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407083701] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:14,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:17:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653334564] [2024-10-11 14:17:14,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:14,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:17:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:17:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:17:14,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 14:17:14,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 46 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 14:17:14,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:14,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 14:17:14,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:18,586 INFO L124 PetriNetUnfolderBase]: 22990/33539 cut-off events. [2024-10-11 14:17:18,587 INFO L125 PetriNetUnfolderBase]: For 44736/44759 co-relation queries the response was YES. [2024-10-11 14:17:18,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96982 conditions, 33539 events. 22990/33539 cut-off events. For 44736/44759 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 235588 event pairs, 1502 based on Foata normal form. 745/34236 useless extension candidates. Maximal degree in co-relation 96964. Up to 14211 conditions per place. [2024-10-11 14:17:19,013 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 59 selfloop transitions, 11 changer transitions 84/165 dead transitions. [2024-10-11 14:17:19,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 165 transitions, 1010 flow [2024-10-11 14:17:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:17:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:17:19,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-10-11 14:17:19,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.61875 [2024-10-11 14:17:19,018 INFO L175 Difference]: Start difference. First operand has 66 places, 46 transitions, 186 flow. Second operand 10 states and 297 transitions. [2024-10-11 14:17:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 165 transitions, 1010 flow [2024-10-11 14:17:19,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 165 transitions, 898 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-10-11 14:17:19,204 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 280 flow [2024-10-11 14:17:19,204 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=280, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2024-10-11 14:17:19,205 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-10-11 14:17:19,205 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 280 flow [2024-10-11 14:17:19,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 14:17:19,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:19,206 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 14:17:19,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:17:19,206 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 14:17:19,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1829214158, now seen corresponding path program 1 times [2024-10-11 14:17:19,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:19,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784689637] [2024-10-11 14:17:19,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:19,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:19,396 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 14:17:19,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:19,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784689637] [2024-10-11 14:17:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784689637] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:19,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:19,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:17:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476364208] [2024-10-11 14:17:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:19,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:17:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:17:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:17:19,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 14:17:19,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 14:17:19,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:19,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 14:17:19,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:23,497 INFO L124 PetriNetUnfolderBase]: 22352/32613 cut-off events. [2024-10-11 14:17:23,498 INFO L125 PetriNetUnfolderBase]: For 89767/89834 co-relation queries the response was YES. [2024-10-11 14:17:23,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104854 conditions, 32613 events. 22352/32613 cut-off events. For 89767/89834 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 227203 event pairs, 4865 based on Foata normal form. 753/33351 useless extension candidates. Maximal degree in co-relation 104829. Up to 13760 conditions per place. [2024-10-11 14:17:23,774 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 17 changer transitions 84/180 dead transitions. [2024-10-11 14:17:23,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 180 transitions, 1220 flow [2024-10-11 14:17:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:17:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:17:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 303 transitions. [2024-10-11 14:17:23,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-10-11 14:17:23,778 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 280 flow. Second operand 10 states and 303 transitions. [2024-10-11 14:17:23,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 180 transitions, 1220 flow [2024-10-11 14:17:24,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 180 transitions, 1192 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-10-11 14:17:24,398 INFO L231 Difference]: Finished difference. Result has 85 places, 62 transitions, 452 flow [2024-10-11 14:17:24,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=452, PETRI_PLACES=85, PETRI_TRANSITIONS=62} [2024-10-11 14:17:24,399 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 29 predicate places. [2024-10-11 14:17:24,399 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 62 transitions, 452 flow [2024-10-11 14:17:24,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 14:17:24,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:24,400 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 14:17:24,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:17:24,400 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 14:17:24,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1512216269, now seen corresponding path program 1 times [2024-10-11 14:17:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096131544] [2024-10-11 14:17:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:24,540 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 14:17:24,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096131544] [2024-10-11 14:17:24,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096131544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:24,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:24,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:17:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401338376] [2024-10-11 14:17:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:24,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:17:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:17:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:17:24,548 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 14:17:24,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 62 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 14:17:24,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:24,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 14:17:24,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:29,638 INFO L124 PetriNetUnfolderBase]: 29882/45449 cut-off events. [2024-10-11 14:17:29,638 INFO L125 PetriNetUnfolderBase]: For 99823/103838 co-relation queries the response was YES. [2024-10-11 14:17:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124991 conditions, 45449 events. 29882/45449 cut-off events. For 99823/103838 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 350857 event pairs, 4609 based on Foata normal form. 2886/47046 useless extension candidates. Maximal degree in co-relation 124959. Up to 22749 conditions per place. [2024-10-11 14:17:30,159 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 59 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-10-11 14:17:30,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 716 flow [2024-10-11 14:17:30,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:17:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:17:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-11 14:17:30,162 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6927083333333334 [2024-10-11 14:17:30,162 INFO L175 Difference]: Start difference. First operand has 85 places, 62 transitions, 452 flow. Second operand 4 states and 133 transitions. [2024-10-11 14:17:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 716 flow [2024-10-11 14:17:31,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 700 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-10-11 14:17:31,697 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 482 flow [2024-10-11 14:17:31,697 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=482, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-10-11 14:17:31,698 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 24 predicate places. [2024-10-11 14:17:31,698 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 482 flow [2024-10-11 14:17:31,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 14:17:31,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:31,699 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 14:17:31,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:17:31,700 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 14:17:31,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1479481314, now seen corresponding path program 1 times [2024-10-11 14:17:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403123673] [2024-10-11 14:17:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:32,087 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 14:17:32,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403123673] [2024-10-11 14:17:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403123673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:17:32,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547670016] [2024-10-11 14:17:32,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:32,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:17:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:17:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:17:32,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 14:17:32,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 482 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 14:17:32,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:32,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 14:17:32,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:39,130 INFO L124 PetriNetUnfolderBase]: 36993/57468 cut-off events. [2024-10-11 14:17:39,131 INFO L125 PetriNetUnfolderBase]: For 127458/130422 co-relation queries the response was YES. [2024-10-11 14:17:39,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171757 conditions, 57468 events. 36993/57468 cut-off events. For 127458/130422 co-relation queries the response was YES. Maximal size of possible extension queue 3061. Compared 496332 event pairs, 18012 based on Foata normal form. 2039/54973 useless extension candidates. Maximal degree in co-relation 171721. Up to 22706 conditions per place. [2024-10-11 14:17:39,681 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 86 selfloop transitions, 14 changer transitions 6/135 dead transitions. [2024-10-11 14:17:39,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 135 transitions, 1000 flow [2024-10-11 14:17:39,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:17:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:17:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-10-11 14:17:39,683 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-10-11 14:17:39,683 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 482 flow. Second operand 7 states and 216 transitions. [2024-10-11 14:17:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 135 transitions, 1000 flow [2024-10-11 14:17:39,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 135 transitions, 984 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-10-11 14:17:39,811 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 585 flow [2024-10-11 14:17:39,811 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-10-11 14:17:39,812 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 30 predicate places. [2024-10-11 14:17:39,812 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 585 flow [2024-10-11 14:17:39,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 14:17:39,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:39,812 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 14:17:39,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:17:39,813 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 14:17:39,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1984995977, now seen corresponding path program 1 times [2024-10-11 14:17:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:39,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985189471] [2024-10-11 14:17:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:39,954 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 14:17:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985189471] [2024-10-11 14:17:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985189471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:39,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:17:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479991061] [2024-10-11 14:17:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:39,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:17:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:17:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:17:39,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-11 14:17:39,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 14:17:39,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:39,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-11 14:17:39,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:17:46,670 INFO L124 PetriNetUnfolderBase]: 39639/58761 cut-off events. [2024-10-11 14:17:46,670 INFO L125 PetriNetUnfolderBase]: For 104537/109075 co-relation queries the response was YES. [2024-10-11 14:17:47,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169402 conditions, 58761 events. 39639/58761 cut-off events. For 104537/109075 co-relation queries the response was YES. Maximal size of possible extension queue 2341. Compared 440115 event pairs, 4482 based on Foata normal form. 3949/61245 useless extension candidates. Maximal degree in co-relation 169365. Up to 22069 conditions per place. [2024-10-11 14:17:47,174 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 76 selfloop transitions, 10 changer transitions 3/123 dead transitions. [2024-10-11 14:17:47,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 945 flow [2024-10-11 14:17:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:17:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:17:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-10-11 14:17:47,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-10-11 14:17:47,176 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 585 flow. Second operand 5 states and 171 transitions. [2024-10-11 14:17:47,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 945 flow [2024-10-11 14:17:47,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 123 transitions, 891 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-10-11 14:17:47,857 INFO L231 Difference]: Finished difference. Result has 89 places, 74 transitions, 565 flow [2024-10-11 14:17:47,857 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=565, PETRI_PLACES=89, PETRI_TRANSITIONS=74} [2024-10-11 14:17:47,858 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-10-11 14:17:47,858 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 74 transitions, 565 flow [2024-10-11 14:17:47,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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 14:17:47,859 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:17:47,859 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:17:47,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:17:47,859 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 14:17:47,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:17:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1121967309, now seen corresponding path program 1 times [2024-10-11 14:17:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:17:47,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390357124] [2024-10-11 14:17:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:17:47,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:17:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:17:48,088 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 14:17:48,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:17:48,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390357124] [2024-10-11 14:17:48,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390357124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:17:48,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:17:48,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:17:48,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041906195] [2024-10-11 14:17:48,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:17:48,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:17:48,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:17:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:17:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:17:48,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-11 14:17:48,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 74 transitions, 565 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 14:17:48,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:17:48,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-11 14:17:48,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand