./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 17:26:07,986 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:26:08,068 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:26:08,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:26:08,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:26:08,089 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:26:08,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:26:08,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:26:08,091 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:26:08,091 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:26:08,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:26:08,092 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:26:08,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:26:08,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:26:08,093 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:26:08,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:26:08,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:26:08,094 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:26:08,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:26:08,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:26:08,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:26:08,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:26:08,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:26:08,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:26:08,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:26:08,097 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:26:08,097 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:26:08,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:26:08,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:26:08,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:26:08,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:26:08,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:26:08,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:26:08,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:26:08,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:26:08,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:26:08,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:26:08,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:26:08,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:26:08,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:26:08,101 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:26:08,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:26:08,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:26:08,102 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51bd5b35703bd543bead4074e6d14da7b357845ee956f8678aa2abe4dcc1210 [2024-06-27 17:26:08,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:26:08,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:26:08,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:26:08,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:26:08,398 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:26:08,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:09,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:26:09,841 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:26:09,842 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:09,870 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac0cf78c/4082e12c607c433b90b98995359d31ca/FLAGe968c539d [2024-06-27 17:26:09,882 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ac0cf78c/4082e12c607c433b90b98995359d31ca [2024-06-27 17:26:09,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:26:09,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 17:26:09,886 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:26:09,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:26:09,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:26:09,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:26:09" (1/1) ... [2024-06-27 17:26:09,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2a15c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:09, skipping insertion in model container [2024-06-27 17:26:09,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:26:09" (1/1) ... [2024-06-27 17:26:09,944 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:26:10,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 17:26:10,366 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:26:10,410 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 17:26:10,439 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix023_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 17:26:10,528 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:26:10,586 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:26:10,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10 WrapperNode [2024-06-27 17:26:10,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:26:10,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:10,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:26:10,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:26:10,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,670 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-06-27 17:26:10,670 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:26:10,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:26:10,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:26:10,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:26:10,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,721 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]. [2024-06-27 17:26:10,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:26:10,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:26:10,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:26:10,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:26:10,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (1/1) ... [2024-06-27 17:26:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:26:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:26:10,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:26:10,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:26:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:26:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:26:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:26:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:26:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:26:10,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:26:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 17:26:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 17:26:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 17:26:10,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 17:26:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:26:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:26:10,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:26:10,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:26:10,828 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:26:10,947 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:26:10,949 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:26:11,237 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:26:11,237 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:26:11,433 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:26:11,433 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:26:11,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:11 BoogieIcfgContainer [2024-06-27 17:26:11,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:26:11,438 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:26:11,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:26:11,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:26:11,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:26:09" (1/3) ... [2024-06-27 17:26:11,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc800b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:11, skipping insertion in model container [2024-06-27 17:26:11,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:26:10" (2/3) ... [2024-06-27 17:26:11,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc800b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:26:11, skipping insertion in model container [2024-06-27 17:26:11,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:26:11" (3/3) ... [2024-06-27 17:26:11,448 INFO L112 eAbstractionObserver]: Analyzing ICFG mix023_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 17:26:11,456 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 17:26:11,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:26:11,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 17:26:11,466 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:26:11,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:26:11,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:26:11,621 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-27 17:26:11,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:11,627 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 96 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. [2024-06-27 17:26:11,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-06-27 17:26:11,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-06-27 17:26:11,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:26:11,656 INFO L357 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, mHoare=true, 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;@2b2be2bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:26:11,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 17:26:11,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:26:11,662 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:26:11,663 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:26:11,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:11,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-06-27 17:26:11,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:11,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:11,669 INFO L85 PathProgramCache]: Analyzing trace with hash 11935288, now seen corresponding path program 1 times [2024-06-27 17:26:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:11,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696098031] [2024-06-27 17:26:11,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:12,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:12,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696098031] [2024-06-27 17:26:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696098031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:12,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:12,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:26:12,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123076176] [2024-06-27 17:26:12,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:12,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:26:12,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:26:12,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:26:12,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-06-27 17:26:12,133 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) [2024-06-27 17:26:12,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:12,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-06-27 17:26:12,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:12,936 INFO L124 PetriNetUnfolderBase]: 2495/3958 cut-off events. [2024-06-27 17:26:12,937 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-27 17:26:12,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7534 conditions, 3958 events. 2495/3958 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24956 event pairs, 1647 based on Foata normal form. 135/4029 useless extension candidates. Maximal degree in co-relation 7522. Up to 2779 conditions per place. [2024-06-27 17:26:12,969 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-06-27 17:26:12,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-06-27 17:26:12,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:26:12,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:26:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 17:26:12,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-06-27 17:26:12,983 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-06-27 17:26:12,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-06-27 17:26:12,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:12,993 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-06-27 17:26:12,995 INFO L264 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} [2024-06-27 17:26:13,001 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-06-27 17:26:13,001 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-06-27 17:26:13,001 INFO L496 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) [2024-06-27 17:26:13,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:13,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:26:13,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:13,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1534029066, now seen corresponding path program 1 times [2024-06-27 17:26:13,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:13,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878813073] [2024-06-27 17:26:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:13,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:13,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:13,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878813073] [2024-06-27 17:26:13,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878813073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:13,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:13,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:13,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517208447] [2024-06-27 17:26:13,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:13,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:13,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:13,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:13,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:13,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 17:26:13,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 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) [2024-06-27 17:26:13,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:13,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 17:26:13,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:19,986 INFO L124 PetriNetUnfolderBase]: 45528/64239 cut-off events. [2024-06-27 17:26:19,987 INFO L125 PetriNetUnfolderBase]: For 2815/2815 co-relation queries the response was YES. [2024-06-27 17:26:20,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128399 conditions, 64239 events. 45528/64239 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 458486 event pairs, 10423 based on Foata normal form. 0/62696 useless extension candidates. Maximal degree in co-relation 128389. Up to 22989 conditions per place. [2024-06-27 17:26:20,410 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 48 selfloop transitions, 9 changer transitions 109/177 dead transitions. [2024-06-27 17:26:20,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 177 transitions, 716 flow [2024-06-27 17:26:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 17:26:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 17:26:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-06-27 17:26:20,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-06-27 17:26:20,421 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 303 transitions. [2024-06-27 17:26:20,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 177 transitions, 716 flow [2024-06-27 17:26:20,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:26:20,426 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2024-06-27 17:26:20,427 INFO L264 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=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-06-27 17:26:20,428 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-06-27 17:26:20,428 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2024-06-27 17:26:20,429 INFO L496 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) [2024-06-27 17:26:20,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:20,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:20,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:26:20,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:20,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:20,439 INFO L85 PathProgramCache]: Analyzing trace with hash 475753509, now seen corresponding path program 1 times [2024-06-27 17:26:20,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:20,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927645682] [2024-06-27 17:26:20,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:20,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927645682] [2024-06-27 17:26:20,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927645682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:20,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:20,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85846322] [2024-06-27 17:26:20,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:20,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:20,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:20,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:20,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:20,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 17:26:20,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 218 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) [2024-06-27 17:26:20,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:20,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 17:26:20,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:25,226 INFO L124 PetriNetUnfolderBase]: 32441/46938 cut-off events. [2024-06-27 17:26:25,227 INFO L125 PetriNetUnfolderBase]: For 69877/70041 co-relation queries the response was YES. [2024-06-27 17:26:25,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141670 conditions, 46938 events. 32441/46938 cut-off events. For 69877/70041 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 339172 event pairs, 4467 based on Foata normal form. 1333/48222 useless extension candidates. Maximal degree in co-relation 141652. Up to 15761 conditions per place. [2024-06-27 17:26:25,573 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 72 selfloop transitions, 9 changer transitions 106/198 dead transitions. [2024-06-27 17:26:25,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 198 transitions, 1290 flow [2024-06-27 17:26:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-06-27 17:26:25,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638 [2024-06-27 17:26:25,576 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 319 transitions. [2024-06-27 17:26:25,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 198 transitions, 1290 flow [2024-06-27 17:26:25,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 198 transitions, 1132 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 17:26:25,873 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 284 flow [2024-06-27 17:26:25,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=284, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-06-27 17:26:25,874 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-06-27 17:26:25,875 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 284 flow [2024-06-27 17:26:25,875 INFO L496 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) [2024-06-27 17:26:25,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:25,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:26:25,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:25,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:25,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1837654150, now seen corresponding path program 1 times [2024-06-27 17:26:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430482942] [2024-06-27 17:26:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:26,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430482942] [2024-06-27 17:26:26,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430482942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:26,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:26,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123174989] [2024-06-27 17:26:26,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:26,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:26,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:26,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:26:26,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:26,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:26,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:26:26,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:29,760 INFO L124 PetriNetUnfolderBase]: 22719/35417 cut-off events. [2024-06-27 17:26:29,760 INFO L125 PetriNetUnfolderBase]: For 79858/81690 co-relation queries the response was YES. [2024-06-27 17:26:29,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105014 conditions, 35417 events. 22719/35417 cut-off events. For 79858/81690 co-relation queries the response was YES. Maximal size of possible extension queue 1707. Compared 283989 event pairs, 6630 based on Foata normal form. 1364/36010 useless extension candidates. Maximal degree in co-relation 104989. Up to 23505 conditions per place. [2024-06-27 17:26:30,061 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 41 selfloop transitions, 7 changer transitions 51/122 dead transitions. [2024-06-27 17:26:30,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 802 flow [2024-06-27 17:26:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 17:26:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 17:26:30,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 17:26:30,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6314285714285715 [2024-06-27 17:26:30,064 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 284 flow. Second operand 7 states and 221 transitions. [2024-06-27 17:26:30,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 802 flow [2024-06-27 17:26:31,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 775 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 17:26:31,238 INFO L231 Difference]: Finished difference. Result has 77 places, 61 transitions, 380 flow [2024-06-27 17:26:31,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=380, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2024-06-27 17:26:31,239 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 19 predicate places. [2024-06-27 17:26:31,239 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 380 flow [2024-06-27 17:26:31,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:31,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:31,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:31,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:26:31,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:31,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:31,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1210118745, now seen corresponding path program 1 times [2024-06-27 17:26:31,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:31,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505359841] [2024-06-27 17:26:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:31,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:31,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:31,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505359841] [2024-06-27 17:26:31,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505359841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:31,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:31,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:31,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537033611] [2024-06-27 17:26:31,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:31,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:31,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:31,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:31,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-06-27 17:26:31,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 61 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 17:26:31,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:31,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-06-27 17:26:31,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:35,594 INFO L124 PetriNetUnfolderBase]: 26807/38978 cut-off events. [2024-06-27 17:26:35,595 INFO L125 PetriNetUnfolderBase]: For 105621/105768 co-relation queries the response was YES. [2024-06-27 17:26:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128291 conditions, 38978 events. 26807/38978 cut-off events. For 105621/105768 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 273495 event pairs, 5175 based on Foata normal form. 856/39690 useless extension candidates. Maximal degree in co-relation 128262. Up to 12689 conditions per place. [2024-06-27 17:26:35,997 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 73 selfloop transitions, 13 changer transitions 90/187 dead transitions. [2024-06-27 17:26:35,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 187 transitions, 1406 flow [2024-06-27 17:26:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 17:26:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 17:26:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-06-27 17:26:36,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598 [2024-06-27 17:26:36,000 INFO L175 Difference]: Start difference. First operand has 77 places, 61 transitions, 380 flow. Second operand 10 states and 299 transitions. [2024-06-27 17:26:36,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 187 transitions, 1406 flow [2024-06-27 17:26:36,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 187 transitions, 1337 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-27 17:26:36,822 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 484 flow [2024-06-27 17:26:36,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=484, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-27 17:26:36,823 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-06-27 17:26:36,823 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 484 flow [2024-06-27 17:26:36,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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) [2024-06-27 17:26:36,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:36,824 INFO L208 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] [2024-06-27 17:26:36,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:26:36,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:36,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:36,828 INFO L85 PathProgramCache]: Analyzing trace with hash 65777953, now seen corresponding path program 1 times [2024-06-27 17:26:36,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:36,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62012962] [2024-06-27 17:26:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:36,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:36,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:36,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62012962] [2024-06-27 17:26:36,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62012962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:36,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:36,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:26:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096232892] [2024-06-27 17:26:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:26:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:26:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:26:36,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:26:36,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 484 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) [2024-06-27 17:26:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:36,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:26:36,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:41,948 INFO L124 PetriNetUnfolderBase]: 33624/50575 cut-off events. [2024-06-27 17:26:41,948 INFO L125 PetriNetUnfolderBase]: For 90257/100182 co-relation queries the response was YES. [2024-06-27 17:26:42,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134304 conditions, 50575 events. 33624/50575 cut-off events. For 90257/100182 co-relation queries the response was YES. Maximal size of possible extension queue 2130. Compared 388049 event pairs, 5867 based on Foata normal form. 2590/51406 useless extension candidates. Maximal degree in co-relation 134271. Up to 25101 conditions per place. [2024-06-27 17:26:42,419 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/104 dead transitions. [2024-06-27 17:26:42,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 740 flow [2024-06-27 17:26:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:26:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:26:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-06-27 17:26:42,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-06-27 17:26:42,420 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 484 flow. Second operand 4 states and 141 transitions. [2024-06-27 17:26:42,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 740 flow [2024-06-27 17:26:43,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 720 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 17:26:43,444 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 510 flow [2024-06-27 17:26:43,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=510, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-06-27 17:26:43,445 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2024-06-27 17:26:43,445 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 510 flow [2024-06-27 17:26:43,446 INFO L496 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) [2024-06-27 17:26:43,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:43,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:26:43,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:43,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash -186630682, now seen corresponding path program 1 times [2024-06-27 17:26:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:43,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840604347] [2024-06-27 17:26:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:43,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840604347] [2024-06-27 17:26:43,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840604347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:43,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:43,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:26:43,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122075789] [2024-06-27 17:26:43,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:43,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:26:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:26:43,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:26:43,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:26:43,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:43,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:43,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:26:43,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:47,547 INFO L124 PetriNetUnfolderBase]: 27562/41715 cut-off events. [2024-06-27 17:26:47,547 INFO L125 PetriNetUnfolderBase]: For 47046/53724 co-relation queries the response was YES. [2024-06-27 17:26:47,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116066 conditions, 41715 events. 27562/41715 cut-off events. For 47046/53724 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 312348 event pairs, 3649 based on Foata normal form. 1973/42215 useless extension candidates. Maximal degree in co-relation 116032. Up to 14018 conditions per place. [2024-06-27 17:26:47,889 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 77 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2024-06-27 17:26:47,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 891 flow [2024-06-27 17:26:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:26:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:26:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-06-27 17:26:47,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.724 [2024-06-27 17:26:47,890 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 510 flow. Second operand 5 states and 181 transitions. [2024-06-27 17:26:47,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 891 flow [2024-06-27 17:26:47,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 876 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 17:26:47,919 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 563 flow [2024-06-27 17:26:47,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-06-27 17:26:47,919 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2024-06-27 17:26:47,920 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 563 flow [2024-06-27 17:26:47,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 17:26:47,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:47,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:26:47,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:47,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash 456045574, now seen corresponding path program 1 times [2024-06-27 17:26:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116720093] [2024-06-27 17:26:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:48,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:48,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:48,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116720093] [2024-06-27 17:26:48,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116720093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:48,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:48,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:26:48,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407967190] [2024-06-27 17:26:48,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:48,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:26:48,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:48,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:26:48,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:26:48,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-06-27 17:26:48,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 563 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-06-27 17:26:48,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:48,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-06-27 17:26:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:26:51,736 INFO L124 PetriNetUnfolderBase]: 22558/33783 cut-off events. [2024-06-27 17:26:51,737 INFO L125 PetriNetUnfolderBase]: For 55875/61245 co-relation queries the response was YES. [2024-06-27 17:26:51,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103369 conditions, 33783 events. 22558/33783 cut-off events. For 55875/61245 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 243499 event pairs, 2887 based on Foata normal form. 1093/33487 useless extension candidates. Maximal degree in co-relation 103336. Up to 11646 conditions per place. [2024-06-27 17:26:51,998 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 91 selfloop transitions, 14 changer transitions 0/144 dead transitions. [2024-06-27 17:26:51,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 144 transitions, 1034 flow [2024-06-27 17:26:51,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:26:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:26:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-06-27 17:26:51,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.73 [2024-06-27 17:26:51,999 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 563 flow. Second operand 6 states and 219 transitions. [2024-06-27 17:26:52,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 144 transitions, 1034 flow [2024-06-27 17:26:52,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 1014 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 17:26:52,045 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 629 flow [2024-06-27 17:26:52,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=629, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2024-06-27 17:26:52,046 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-06-27 17:26:52,046 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 629 flow [2024-06-27 17:26:52,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2024-06-27 17:26:52,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:26:52,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:26:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:26:52,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 17:26:52,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:26:52,048 INFO L85 PathProgramCache]: Analyzing trace with hash -741536206, now seen corresponding path program 1 times [2024-06-27 17:26:52,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:26:52,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659909931] [2024-06-27 17:26:52,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:26:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:26:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:26:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:26:52,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:26:52,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659909931] [2024-06-27 17:26:52,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659909931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:26:52,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:26:52,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 17:26:52,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390827638] [2024-06-27 17:26:52,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:26:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 17:26:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:26:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 17:26:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 17:26:52,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2024-06-27 17:26:52,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 629 flow. Second operand has 9 states, 9 states have (on average 24.11111111111111) internal successors, (217), 9 states have internal predecessors, (217), 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) [2024-06-27 17:26:52,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:26:52,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2024-06-27 17:26:52,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand