./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/mix008_power.oepc_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix008_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 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 14:21:38,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 14:21:39,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 14:21:39,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 14:21:39,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 14:21:39,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 14:21:39,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 14:21:39,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 14:21:39,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 14:21:39,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 14:21:39,109 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 14:21:39,109 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 14:21:39,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 14:21:39,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 14:21:39,110 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 14:21:39,110 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 14:21:39,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 14:21:39,110 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 14:21:39,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 14:21:39,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 14:21:39,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 14:21:39,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 14:21:39,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 14:21:39,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 14:21:39,112 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 14:21:39,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 14:21:39,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 14:21:39,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 14:21:39,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 14:21:39,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 14:21:39,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 14:21:39,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 14:21:39,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:21:39,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 14:21:39,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 14:21:39,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 14:21:39,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 14:21:39,115 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 14:21:39,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 14:21:39,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 14:21:39,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 14:21:39,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 14:21:39,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 773055aaa90ff8ec223993b190a157a4b1c15a4828ef014894ca730726d954aa [2024-10-14 14:21:39,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 14:21:39,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 14:21:39,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 14:21:39,351 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 14:21:39,352 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 14:21:39,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-10-14 14:21:40,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 14:21:40,933 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 14:21:40,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-10-14 14:21:40,950 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbe6c1b6/fde924714b634a9bb31ed257978406ea/FLAG8227c3b03 [2024-10-14 14:21:40,963 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbbe6c1b6/fde924714b634a9bb31ed257978406ea [2024-10-14 14:21:40,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 14:21:40,966 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 14:21:40,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 14:21:40,968 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 14:21:40,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 14:21:40,972 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:21:40" (1/1) ... [2024-10-14 14:21:40,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b90a5ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:40, skipping insertion in model container [2024-10-14 14:21:40,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:21:40" (1/1) ... [2024-10-14 14:21:41,012 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 14:21:41,153 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/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-14 14:21:41,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:21:41,328 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 14:21:41,343 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/mix008_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-10-14 14:21:41,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 14:21:41,441 INFO L204 MainTranslator]: Completed translation [2024-10-14 14:21:41,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41 WrapperNode [2024-10-14 14:21:41,442 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 14:21:41,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 14:21:41,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 14:21:41,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 14:21:41,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,467 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,486 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2024-10-14 14:21:41,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 14:21:41,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 14:21:41,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 14:21:41,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 14:21:41,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,515 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]. [2024-10-14 14:21:41,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 14:21:41,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 14:21:41,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 14:21:41,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 14:21:41,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (1/1) ... [2024-10-14 14:21:41,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 14:21:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 14:21:41,580 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) [2024-10-14 14:21:41,587 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 [2024-10-14 14:21:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 14:21:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 14:21:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-14 14:21:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-14 14:21:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-14 14:21:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-14 14:21:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-14 14:21:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-14 14:21:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-14 14:21:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-14 14:21:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 14:21:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 14:21:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 14:21:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 14:21:41,636 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 14:21:41,760 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 14:21:41,762 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 14:21:42,217 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 14:21:42,217 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 14:21:42,499 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 14:21:42,500 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 14:21:42,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:21:42 BoogieIcfgContainer [2024-10-14 14:21:42,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 14:21:42,502 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 14:21:42,502 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 14:21:42,505 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 14:21:42,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:21:40" (1/3) ... [2024-10-14 14:21:42,506 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10573f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:21:42, skipping insertion in model container [2024-10-14 14:21:42,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:21:41" (2/3) ... [2024-10-14 14:21:42,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10573f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:21:42, skipping insertion in model container [2024-10-14 14:21:42,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:21:42" (3/3) ... [2024-10-14 14:21:42,508 INFO L112 eAbstractionObserver]: Analyzing ICFG mix008_power.oepc_pso.oepc_rmo.oepc.i [2024-10-14 14:21:42,522 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 14:21:42,523 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 14:21:42,523 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 14:21:42,573 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 14:21:42,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-10-14 14:21:42,627 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-10-14 14:21:42,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:21:42,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-10-14 14:21:42,631 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-10-14 14:21:42,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-10-14 14:21:42,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 14:21:42,651 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;@790ddc77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 14:21:42,652 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-14 14:21:42,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 14:21:42,656 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-10-14 14:21:42,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 14:21:42,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:21:42,657 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 14:21:42,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-14 14:21:42,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:21:42,662 INFO L85 PathProgramCache]: Analyzing trace with hash 11905497, now seen corresponding path program 1 times [2024-10-14 14:21:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:21:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201372030] [2024-10-14 14:21:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:21:42,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:21:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:21:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:21:43,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:21:43,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201372030] [2024-10-14 14:21:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201372030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:21:43,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:21:43,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 14:21:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623016214] [2024-10-14 14:21:43,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:21:43,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 14:21:43,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:21:43,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 14:21:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 14:21:43,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 50 [2024-10-14 14:21:43,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:21:43,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:21:43,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 50 [2024-10-14 14:21:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:21:43,902 INFO L124 PetriNetUnfolderBase]: 2495/3960 cut-off events. [2024-10-14 14:21:43,904 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-14 14:21:43,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 3960 events. 2495/3960 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 24730 event pairs, 1647 based on Foata normal form. 135/4028 useless extension candidates. Maximal degree in co-relation 7524. Up to 2779 conditions per place. [2024-10-14 14:21:43,928 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 37 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2024-10-14 14:21:43,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 227 flow [2024-10-14 14:21:43,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 14:21:43,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 14:21:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-14 14:21:43,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7933333333333333 [2024-10-14 14:21:43,938 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 119 transitions. [2024-10-14 14:21:43,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 227 flow [2024-10-14 14:21:43,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 14:21:43,946 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-10-14 14:21:43,947 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-10-14 14:21:43,950 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-10-14 14:21:43,950 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-10-14 14:21:43,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:21:43,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:21:43,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:21:43,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 14:21:43,951 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)] === [2024-10-14 14:21:43,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:21:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1564075337, now seen corresponding path program 1 times [2024-10-14 14:21:43,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:21:43,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850285557] [2024-10-14 14:21:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:21:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:21:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:21:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:21:44,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:21:44,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850285557] [2024-10-14 14:21:44,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850285557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:21:44,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:21:44,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:21:44,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653548291] [2024-10-14 14:21:44,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:21:44,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:21:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:21:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:21:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:21:44,207 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-14 14:21:44,207 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) [2024-10-14 14:21:44,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:21:44,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-14 14:21:44,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:21:50,403 INFO L124 PetriNetUnfolderBase]: 46399/65543 cut-off events. [2024-10-14 14:21:50,403 INFO L125 PetriNetUnfolderBase]: For 2705/2705 co-relation queries the response was YES. [2024-10-14 14:21:50,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130780 conditions, 65543 events. 46399/65543 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 2647. Compared 468426 event pairs, 10572 based on Foata normal form. 0/63871 useless extension candidates. Maximal degree in co-relation 130770. Up to 24355 conditions per place. [2024-10-14 14:21:50,703 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 48 selfloop transitions, 9 changer transitions 109/177 dead transitions. [2024-10-14 14:21:50,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 177 transitions, 716 flow [2024-10-14 14:21:50,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 14:21:50,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 14:21:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-10-14 14:21:50,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6733333333333333 [2024-10-14 14:21:50,706 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 9 states and 303 transitions. [2024-10-14 14:21:50,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 177 transitions, 716 flow [2024-10-14 14:21:50,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 177 transitions, 698 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 14:21:50,863 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 218 flow [2024-10-14 14:21:50,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2024-10-14 14:21:50,865 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-14 14:21:50,866 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 218 flow [2024-10-14 14:21:50,866 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) [2024-10-14 14:21:50,866 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:21:50,866 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:21:50,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 14:21:50,867 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)] === [2024-10-14 14:21:50,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:21:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -382180122, now seen corresponding path program 1 times [2024-10-14 14:21:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:21:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795163070] [2024-10-14 14:21:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:21:50,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:21:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:21:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:21:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:21:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795163070] [2024-10-14 14:21:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795163070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:21:51,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:21:51,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:21:51,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717426878] [2024-10-14 14:21:51,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:21:51,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:21:51,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:21:51,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:21:51,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:21:51,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-14 14:21:51,065 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) [2024-10-14 14:21:51,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:21:51,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-14 14:21:51,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:21:56,212 INFO L124 PetriNetUnfolderBase]: 35754/51330 cut-off events. [2024-10-14 14:21:56,212 INFO L125 PetriNetUnfolderBase]: For 77805/78033 co-relation queries the response was YES. [2024-10-14 14:21:56,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158911 conditions, 51330 events. 35754/51330 cut-off events. For 77805/78033 co-relation queries the response was YES. Maximal size of possible extension queue 2131. Compared 366294 event pairs, 5767 based on Foata normal form. 1341/52616 useless extension candidates. Maximal degree in co-relation 158893. Up to 22876 conditions per place. [2024-10-14 14:21:56,491 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 66 selfloop transitions, 13 changer transitions 104/194 dead transitions. [2024-10-14 14:21:56,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 194 transitions, 1292 flow [2024-10-14 14:21:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:21:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:21:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 320 transitions. [2024-10-14 14:21:56,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-10-14 14:21:56,496 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 218 flow. Second operand 10 states and 320 transitions. [2024-10-14 14:21:56,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 194 transitions, 1292 flow [2024-10-14 14:21:56,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 194 transitions, 1126 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-10-14 14:21:56,696 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 326 flow [2024-10-14 14:21:56,697 INFO L260 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=326, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2024-10-14 14:21:56,697 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2024-10-14 14:21:56,697 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 326 flow [2024-10-14 14:21:56,698 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) [2024-10-14 14:21:56,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:21:56,698 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:21:56,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 14:21:56,698 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)] === [2024-10-14 14:21:56,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:21:56,698 INFO L85 PathProgramCache]: Analyzing trace with hash -836740680, now seen corresponding path program 1 times [2024-10-14 14:21:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:21:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453870219] [2024-10-14 14:21:56,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:21:56,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:21:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:21:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:21:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:21:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453870219] [2024-10-14 14:21:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453870219] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:21:56,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:21:56,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:21:56,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078727135] [2024-10-14 14:21:56,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:21:56,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:21:56,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:21:56,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:21:56,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:21:56,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-14 14:21:56,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 326 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) [2024-10-14 14:21:56,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:21:56,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-14 14:21:56,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:22:03,116 INFO L124 PetriNetUnfolderBase]: 33518/48311 cut-off events. [2024-10-14 14:22:03,116 INFO L125 PetriNetUnfolderBase]: For 136806/136964 co-relation queries the response was YES. [2024-10-14 14:22:03,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162601 conditions, 48311 events. 33518/48311 cut-off events. For 136806/136964 co-relation queries the response was YES. Maximal size of possible extension queue 1949. Compared 342549 event pairs, 7115 based on Foata normal form. 1141/49411 useless extension candidates. Maximal degree in co-relation 162576. Up to 21763 conditions per place. [2024-10-14 14:22:03,486 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 71 selfloop transitions, 20 changer transitions 90/192 dead transitions. [2024-10-14 14:22:03,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 192 transitions, 1354 flow [2024-10-14 14:22:03,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:22:03,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:22:03,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-10-14 14:22:03,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.642 [2024-10-14 14:22:03,492 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 326 flow. Second operand 10 states and 321 transitions. [2024-10-14 14:22:03,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 192 transitions, 1354 flow [2024-10-14 14:22:04,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 192 transitions, 1326 flow, removed 14 selfloop flow, removed 0 redundant places. [2024-10-14 14:22:04,073 INFO L231 Difference]: Finished difference. Result has 86 places, 65 transitions, 469 flow [2024-10-14 14:22:04,073 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=469, PETRI_PLACES=86, PETRI_TRANSITIONS=65} [2024-10-14 14:22:04,073 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2024-10-14 14:22:04,074 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 65 transitions, 469 flow [2024-10-14 14:22:04,074 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) [2024-10-14 14:22:04,074 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:22:04,074 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] [2024-10-14 14:22:04,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 14:22:04,074 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)] === [2024-10-14 14:22:04,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:22:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash -955589289, now seen corresponding path program 1 times [2024-10-14 14:22:04,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:22:04,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423844999] [2024-10-14 14:22:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:22:04,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:22:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:22:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:22:04,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:22:04,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423844999] [2024-10-14 14:22:04,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423844999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:22:04,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:22:04,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 14:22:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239289474] [2024-10-14 14:22:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:22:04,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:22:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:22:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:22:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:22:04,217 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-14 14:22:04,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 65 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:22:04,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:22:04,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-14 14:22:04,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:22:09,400 INFO L124 PetriNetUnfolderBase]: 31004/44771 cut-off events. [2024-10-14 14:22:09,400 INFO L125 PetriNetUnfolderBase]: For 182260/182954 co-relation queries the response was YES. [2024-10-14 14:22:09,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166357 conditions, 44771 events. 31004/44771 cut-off events. For 182260/182954 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 314656 event pairs, 3885 based on Foata normal form. 1042/45728 useless extension candidates. Maximal degree in co-relation 166322. Up to 18012 conditions per place. [2024-10-14 14:22:09,859 INFO L140 encePairwiseOnDemand]: 38/50 looper letters, 78 selfloop transitions, 19 changer transitions 98/206 dead transitions. [2024-10-14 14:22:09,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 206 transitions, 1764 flow [2024-10-14 14:22:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 14:22:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 14:22:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 309 transitions. [2024-10-14 14:22:09,860 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.618 [2024-10-14 14:22:09,860 INFO L175 Difference]: Start difference. First operand has 86 places, 65 transitions, 469 flow. Second operand 10 states and 309 transitions. [2024-10-14 14:22:09,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 206 transitions, 1764 flow [2024-10-14 14:22:12,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 206 transitions, 1658 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-10-14 14:22:12,636 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 667 flow [2024-10-14 14:22:12,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=667, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-10-14 14:22:12,637 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-10-14 14:22:12,637 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 667 flow [2024-10-14 14:22:12,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:22:12,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:22:12,637 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:22:12,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 14:22:12,638 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)] === [2024-10-14 14:22:12,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:22:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 429356064, now seen corresponding path program 1 times [2024-10-14 14:22:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:22:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437640936] [2024-10-14 14:22:12,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:22:12,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:22:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:22:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:22:12,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:22:12,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437640936] [2024-10-14 14:22:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437640936] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:22:12,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:22:12,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 14:22:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511735177] [2024-10-14 14:22:12,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:22:12,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 14:22:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:22:12,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 14:22:12,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 14:22:12,738 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-10-14 14:22:12,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-10-14 14:22:12,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:22:12,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-10-14 14:22:12,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:22:16,074 INFO L124 PetriNetUnfolderBase]: 19170/30743 cut-off events. [2024-10-14 14:22:16,075 INFO L125 PetriNetUnfolderBase]: For 117504/120448 co-relation queries the response was YES. [2024-10-14 14:22:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103437 conditions, 30743 events. 19170/30743 cut-off events. For 117504/120448 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 252277 event pairs, 4668 based on Foata normal form. 1486/31460 useless extension candidates. Maximal degree in co-relation 103401. Up to 16129 conditions per place. [2024-10-14 14:22:16,342 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 39 selfloop transitions, 4 changer transitions 47/137 dead transitions. [2024-10-14 14:22:16,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1136 flow [2024-10-14 14:22:16,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 14:22:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 14:22:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-10-14 14:22:16,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2024-10-14 14:22:16,343 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 667 flow. Second operand 7 states and 228 transitions. [2024-10-14 14:22:16,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1136 flow [2024-10-14 14:22:17,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 137 transitions, 1099 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-10-14 14:22:17,272 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 664 flow [2024-10-14 14:22:17,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=664, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-10-14 14:22:17,273 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2024-10-14 14:22:17,273 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 664 flow [2024-10-14 14:22:17,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 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) [2024-10-14 14:22:17,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:22:17,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:22:17,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 14:22:17,274 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)] === [2024-10-14 14:22:17,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:22:17,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1664312417, now seen corresponding path program 1 times [2024-10-14 14:22:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:22:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143972013] [2024-10-14 14:22:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:22:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:22:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:22:17,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:22:17,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:22:17,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143972013] [2024-10-14 14:22:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143972013] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:22:17,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:22:17,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 14:22:17,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890052666] [2024-10-14 14:22:17,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:22:17,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 14:22:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:22:17,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 14:22:17,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 14:22:17,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 50 [2024-10-14 14:22:17,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 664 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:22:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:22:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 50 [2024-10-14 14:22:17,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 14:22:23,002 INFO L124 PetriNetUnfolderBase]: 34595/52769 cut-off events. [2024-10-14 14:22:23,003 INFO L125 PetriNetUnfolderBase]: For 88418/93611 co-relation queries the response was YES. [2024-10-14 14:22:23,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141266 conditions, 52769 events. 34595/52769 cut-off events. For 88418/93611 co-relation queries the response was YES. Maximal size of possible extension queue 2151. Compared 412996 event pairs, 5431 based on Foata normal form. 2674/54018 useless extension candidates. Maximal degree in co-relation 141226. Up to 26023 conditions per place. [2024-10-14 14:22:23,389 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 59 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2024-10-14 14:22:23,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 112 transitions, 932 flow [2024-10-14 14:22:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 14:22:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 14:22:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-10-14 14:22:23,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.705 [2024-10-14 14:22:23,390 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 664 flow. Second operand 4 states and 141 transitions. [2024-10-14 14:22:23,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 112 transitions, 932 flow [2024-10-14 14:22:23,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 896 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-10-14 14:22:23,543 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 674 flow [2024-10-14 14:22:23,543 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=674, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-10-14 14:22:23,543 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 22 predicate places. [2024-10-14 14:22:23,543 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 674 flow [2024-10-14 14:22:23,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 14:22:23,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 14:22:23,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 14:22:23,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 14:22:23,544 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)] === [2024-10-14 14:22:23,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 14:22:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash -325488800, now seen corresponding path program 1 times [2024-10-14 14:22:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 14:22:23,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417903776] [2024-10-14 14:22:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 14:22:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 14:22:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 14:22:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 14:22:23,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 14:22:23,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417903776] [2024-10-14 14:22:23,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417903776] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 14:22:23,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 14:22:23,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 14:22:23,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375213215] [2024-10-14 14:22:23,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 14:22:23,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 14:22:23,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 14:22:23,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 14:22:23,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-14 14:22:23,698 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-10-14 14:22:23,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2024-10-14 14:22:23,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 14:22:23,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-10-14 14:22:23,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand