./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/mix021.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:14:47,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:14:47,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:14:47,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:14:47,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:14:47,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:14:47,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:14:47,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:14:47,501 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:14:47,501 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:14:47,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:14:47,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:14:47,503 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:14:47,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:14:47,505 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:14:47,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:14:47,506 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:14:47,506 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:14:47,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:14:47,507 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:14:47,507 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:14:47,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:14:47,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:14:47,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:14:47,509 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:14:47,509 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:14:47,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:14:47,509 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:14:47,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:14:47,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:14:47,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:14:47,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:14:47,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:14:47,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:14:47,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:14:47,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:14:47,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:14:47,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:14:47,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:14:47,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:14:47,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:14:47,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:14:47,515 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 576d0750cd121d18ae295ddde1dd1649436f79f5ff3834655e4b6c15fd1260db [2024-10-11 14:14:47,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:14:47,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:14:47,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:14:47,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:14:47,804 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:14:47,805 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2024-10-11 14:14:49,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:14:49,507 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:14:49,508 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix021.opt.i [2024-10-11 14:14:49,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/69626b036/f5fe9af029d24adf8e36d42988530a56/FLAG050be3c44 [2024-10-11 14:14:49,836 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/69626b036/f5fe9af029d24adf8e36d42988530a56 [2024-10-11 14:14:49,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:14:49,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:14:49,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:14:49,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:14:49,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:14:49,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:14:49" (1/1) ... [2024-10-11 14:14:49,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101265d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:49, skipping insertion in model container [2024-10-11 14:14:49,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:14:49" (1/1) ... [2024-10-11 14:14:49,894 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:14:50,093 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/mix021.opt.i[944,957] [2024-10-11 14:14:50,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:14:50,349 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:14:50,362 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/mix021.opt.i[944,957] [2024-10-11 14:14:50,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:14:50,489 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:14:50,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50 WrapperNode [2024-10-11 14:14:50,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:14:50,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:14:50,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:14:50,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:14:50,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,524 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,564 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2024-10-11 14:14:50,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:14:50,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:14:50,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:14:50,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:14:50,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,585 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,614 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-11 14:14:50,615 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,616 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,629 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:14:50,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:14:50,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:14:50,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:14:50,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (1/1) ... [2024-10-11 14:14:50,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:14:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:14:50,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:14:50,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:14:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 14:14:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:14:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-11 14:14:50,742 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-11 14:14:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-11 14:14:50,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-11 14:14:50,743 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-11 14:14:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-11 14:14:50,744 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-11 14:14:50,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-11 14:14:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:14:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 14:14:50,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:14:50,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:14:50,747 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:14:50,942 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:14:50,945 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:14:51,279 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:14:51,280 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:14:51,488 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:14:51,489 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:14:51,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:14:51 BoogieIcfgContainer [2024-10-11 14:14:51,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:14:51,493 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:14:51,493 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:14:51,497 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:14:51,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:14:49" (1/3) ... [2024-10-11 14:14:51,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c73838f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:14:51, skipping insertion in model container [2024-10-11 14:14:51,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:14:50" (2/3) ... [2024-10-11 14:14:51,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c73838f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:14:51, skipping insertion in model container [2024-10-11 14:14:51,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:14:51" (3/3) ... [2024-10-11 14:14:51,501 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021.opt.i [2024-10-11 14:14:51,518 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:14:51,518 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:14:51,518 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:14:51,582 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 14:14:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2024-10-11 14:14:51,660 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-10-11 14:14:51,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:14:51,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-10-11 14:14:51,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2024-10-11 14:14:51,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2024-10-11 14:14:51,679 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:14:51,689 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;@443f0afa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:14:51,689 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-11 14:14:51,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:14:51,699 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2024-10-11 14:14:51,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:14:51,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:51,700 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:51,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:51,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1251635780, now seen corresponding path program 1 times [2024-10-11 14:14:51,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:51,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341767525] [2024-10-11 14:14:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:52,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341767525] [2024-10-11 14:14:52,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341767525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:52,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:52,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 14:14:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239193189] [2024-10-11 14:14:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:52,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:14:52,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:14:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:14:52,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 49 [2024-10-11 14:14:52,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:52,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:52,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 49 [2024-10-11 14:14:52,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:52,793 INFO L124 PetriNetUnfolderBase]: 879/1523 cut-off events. [2024-10-11 14:14:52,794 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:14:52,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2843 conditions, 1523 events. 879/1523 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10412 event pairs, 159 based on Foata normal form. 60/1543 useless extension candidates. Maximal degree in co-relation 2831. Up to 1009 conditions per place. [2024-10-11 14:14:52,815 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 26 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-10-11 14:14:52,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 176 flow [2024-10-11 14:14:52,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:14:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:14:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-10-11 14:14:52,830 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2024-10-11 14:14:52,832 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 111 transitions. [2024-10-11 14:14:52,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 176 flow [2024-10-11 14:14:52,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:14:52,841 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2024-10-11 14:14:52,844 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-10-11 14:14:52,849 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2024-10-11 14:14:52,850 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2024-10-11 14:14:52,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:52,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:52,850 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:52,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:14:52,851 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:52,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:52,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103079, now seen corresponding path program 1 times [2024-10-11 14:14:52,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175849863] [2024-10-11 14:14:52,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:52,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:53,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175849863] [2024-10-11 14:14:53,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175849863] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:53,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:53,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:14:53,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089171792] [2024-10-11 14:14:53,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:53,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:14:53,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:53,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:14:53,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:14:53,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 14:14:53,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:53,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:53,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 14:14:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:56,583 INFO L124 PetriNetUnfolderBase]: 15819/23731 cut-off events. [2024-10-11 14:14:56,587 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-10-11 14:14:56,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46421 conditions, 23731 events. 15819/23731 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 1398. Compared 180560 event pairs, 3634 based on Foata normal form. 0/23023 useless extension candidates. Maximal degree in co-relation 46411. Up to 8109 conditions per place. [2024-10-11 14:14:56,765 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 41 selfloop transitions, 8 changer transitions 85/148 dead transitions. [2024-10-11 14:14:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 148 transitions, 594 flow [2024-10-11 14:14:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:14:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:14:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-10-11 14:14:56,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6757369614512472 [2024-10-11 14:14:56,769 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 9 states and 298 transitions. [2024-10-11 14:14:56,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 148 transitions, 594 flow [2024-10-11 14:14:56,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:14:56,790 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 202 flow [2024-10-11 14:14:56,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=202, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2024-10-11 14:14:56,791 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2024-10-11 14:14:56,791 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 202 flow [2024-10-11 14:14:56,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:56,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:56,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:56,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:14:56,792 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:56,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1492082494, now seen corresponding path program 1 times [2024-10-11 14:14:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:56,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51364934] [2024-10-11 14:14:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:14:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:14:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:14:56,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51364934] [2024-10-11 14:14:56,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51364934] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:14:56,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:14:56,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:14:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605906246] [2024-10-11 14:14:56,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:14:56,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:14:57,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:14:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:14:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:14:57,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-10-11 14:14:57,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:57,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:14:57,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-10-11 14:14:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:14:59,397 INFO L124 PetriNetUnfolderBase]: 11171/17853 cut-off events. [2024-10-11 14:14:59,398 INFO L125 PetriNetUnfolderBase]: For 29535/29535 co-relation queries the response was YES. [2024-10-11 14:14:59,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55081 conditions, 17853 events. 11171/17853 cut-off events. For 29535/29535 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 139976 event pairs, 1903 based on Foata normal form. 486/18226 useless extension candidates. Maximal degree in co-relation 55063. Up to 5673 conditions per place. [2024-10-11 14:14:59,564 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 51 selfloop transitions, 9 changer transitions 80/154 dead transitions. [2024-10-11 14:14:59,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 154 transitions, 1064 flow [2024-10-11 14:14:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:14:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:14:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-10-11 14:14:59,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-10-11 14:14:59,567 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 202 flow. Second operand 10 states and 305 transitions. [2024-10-11 14:14:59,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 154 transitions, 1064 flow [2024-10-11 14:14:59,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 154 transitions, 918 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-10-11 14:14:59,670 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 272 flow [2024-10-11 14:14:59,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2024-10-11 14:14:59,671 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2024-10-11 14:14:59,672 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 272 flow [2024-10-11 14:14:59,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:14:59,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:14:59,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:14:59,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:14:59,673 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:14:59,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:14:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1168558406, now seen corresponding path program 1 times [2024-10-11 14:14:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:14:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515073002] [2024-10-11 14:14:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:14:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:14:59,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:00,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515073002] [2024-10-11 14:15:00,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515073002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:00,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:00,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:15:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279959671] [2024-10-11 14:15:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:00,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:15:00,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:15:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:15:00,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:00,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 272 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:00,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:00,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:00,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:01,777 INFO L124 PetriNetUnfolderBase]: 7926/13710 cut-off events. [2024-10-11 14:15:01,778 INFO L125 PetriNetUnfolderBase]: For 31981/32614 co-relation queries the response was YES. [2024-10-11 14:15:01,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42846 conditions, 13710 events. 7926/13710 cut-off events. For 31981/32614 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 114649 event pairs, 2141 based on Foata normal form. 393/13213 useless extension candidates. Maximal degree in co-relation 42821. Up to 7939 conditions per place. [2024-10-11 14:15:01,921 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 43 selfloop transitions, 7 changer transitions 39/111 dead transitions. [2024-10-11 14:15:01,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 111 transitions, 770 flow [2024-10-11 14:15:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:15:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:15:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-10-11 14:15:01,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6297376093294461 [2024-10-11 14:15:01,925 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 272 flow. Second operand 7 states and 216 transitions. [2024-10-11 14:15:01,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 111 transitions, 770 flow [2024-10-11 14:15:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 111 transitions, 741 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-10-11 14:15:02,228 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 368 flow [2024-10-11 14:15:02,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2024-10-11 14:15:02,231 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-11 14:15:02,231 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 368 flow [2024-10-11 14:15:02,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:02,232 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:02,232 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] [2024-10-11 14:15:02,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:15:02,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:02,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:02,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2130153545, now seen corresponding path program 1 times [2024-10-11 14:15:02,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:02,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923572756] [2024-10-11 14:15:02,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:02,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:02,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923572756] [2024-10-11 14:15:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923572756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:15:02,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779111289] [2024-10-11 14:15:02,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:02,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:15:02,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:02,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:15:02,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:15:02,683 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:02,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 368 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:02,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:02,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:02,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:04,462 INFO L124 PetriNetUnfolderBase]: 7570/13001 cut-off events. [2024-10-11 14:15:04,462 INFO L125 PetriNetUnfolderBase]: For 32969/33579 co-relation queries the response was YES. [2024-10-11 14:15:04,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42431 conditions, 13001 events. 7570/13001 cut-off events. For 32969/33579 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 105860 event pairs, 3000 based on Foata normal form. 363/13062 useless extension candidates. Maximal degree in co-relation 42402. Up to 8123 conditions per place. [2024-10-11 14:15:04,547 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 46 selfloop transitions, 6 changer transitions 37/117 dead transitions. [2024-10-11 14:15:04,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 117 transitions, 852 flow [2024-10-11 14:15:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:15:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:15:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-10-11 14:15:04,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6443148688046647 [2024-10-11 14:15:04,550 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 368 flow. Second operand 7 states and 221 transitions. [2024-10-11 14:15:04,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 117 transitions, 852 flow [2024-10-11 14:15:04,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 117 transitions, 801 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-10-11 14:15:04,685 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 411 flow [2024-10-11 14:15:04,685 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=411, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-10-11 14:15:04,688 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-11 14:15:04,688 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 411 flow [2024-10-11 14:15:04,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:04,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:04,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:15:04,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:15:04,689 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:04,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash 185670121, now seen corresponding path program 1 times [2024-10-11 14:15:04,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:04,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59317601] [2024-10-11 14:15:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59317601] [2024-10-11 14:15:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59317601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:04,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:04,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:15:04,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366274707] [2024-10-11 14:15:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:04,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:15:04,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:15:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:15:04,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:04,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 411 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:04,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:04,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:04,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:06,760 INFO L124 PetriNetUnfolderBase]: 9176/15681 cut-off events. [2024-10-11 14:15:06,760 INFO L125 PetriNetUnfolderBase]: For 47018/47447 co-relation queries the response was YES. [2024-10-11 14:15:06,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51281 conditions, 15681 events. 9176/15681 cut-off events. For 47018/47447 co-relation queries the response was YES. Maximal size of possible extension queue 927. Compared 135324 event pairs, 3516 based on Foata normal form. 345/15356 useless extension candidates. Maximal degree in co-relation 51252. Up to 5947 conditions per place. [2024-10-11 14:15:06,869 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 46 selfloop transitions, 8 changer transitions 38/119 dead transitions. [2024-10-11 14:15:06,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 119 transitions, 883 flow [2024-10-11 14:15:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:15:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:15:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-10-11 14:15:06,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.641399416909621 [2024-10-11 14:15:06,872 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 411 flow. Second operand 7 states and 220 transitions. [2024-10-11 14:15:06,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 119 transitions, 883 flow [2024-10-11 14:15:07,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 849 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-10-11 14:15:07,024 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 419 flow [2024-10-11 14:15:07,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-10-11 14:15:07,026 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2024-10-11 14:15:07,027 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 419 flow [2024-10-11 14:15:07,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:07,028 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:07,028 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:15:07,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:15:07,028 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:07,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:07,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1390336798, now seen corresponding path program 1 times [2024-10-11 14:15:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:07,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547034519] [2024-10-11 14:15:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:07,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:07,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:07,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547034519] [2024-10-11 14:15:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547034519] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:15:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881058040] [2024-10-11 14:15:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:07,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:15:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:15:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:15:07,309 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:07,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:07,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:07,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:07,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:11,627 INFO L124 PetriNetUnfolderBase]: 24881/37722 cut-off events. [2024-10-11 14:15:11,627 INFO L125 PetriNetUnfolderBase]: For 77188/80109 co-relation queries the response was YES. [2024-10-11 14:15:11,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105455 conditions, 37722 events. 24881/37722 cut-off events. For 77188/80109 co-relation queries the response was YES. Maximal size of possible extension queue 1934. Compared 296201 event pairs, 4474 based on Foata normal form. 1825/38557 useless extension candidates. Maximal degree in co-relation 105423. Up to 19440 conditions per place. [2024-10-11 14:15:11,953 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 56 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2024-10-11 14:15:11,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 677 flow [2024-10-11 14:15:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:15:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:15:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-11 14:15:11,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2024-10-11 14:15:11,955 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 419 flow. Second operand 4 states and 139 transitions. [2024-10-11 14:15:11,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 677 flow [2024-10-11 14:15:12,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 647 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-10-11 14:15:12,194 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 435 flow [2024-10-11 14:15:12,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-10-11 14:15:12,195 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-10-11 14:15:12,195 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 435 flow [2024-10-11 14:15:12,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:12,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:12,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:15:12,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:15:12,196 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:12,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1693650685, now seen corresponding path program 1 times [2024-10-11 14:15:12,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:12,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233343891] [2024-10-11 14:15:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:12,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:12,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233343891] [2024-10-11 14:15:12,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233343891] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:12,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:12,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:15:12,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671689244] [2024-10-11 14:15:12,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:12,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:15:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:15:12,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:15:12,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:12,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:12,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:12,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:12,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:17,455 INFO L124 PetriNetUnfolderBase]: 25111/41694 cut-off events. [2024-10-11 14:15:17,455 INFO L125 PetriNetUnfolderBase]: For 87937/90012 co-relation queries the response was YES. [2024-10-11 14:15:17,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125079 conditions, 41694 events. 25111/41694 cut-off events. For 87937/90012 co-relation queries the response was YES. Maximal size of possible extension queue 2394. Compared 384610 event pairs, 11933 based on Foata normal form. 1102/38239 useless extension candidates. Maximal degree in co-relation 125048. Up to 15762 conditions per place. [2024-10-11 14:15:17,733 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 14 changer transitions 4/122 dead transitions. [2024-10-11 14:15:17,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 873 flow [2024-10-11 14:15:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 14:15:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 14:15:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-10-11 14:15:17,735 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6472303206997084 [2024-10-11 14:15:17,735 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 435 flow. Second operand 7 states and 222 transitions. [2024-10-11 14:15:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 873 flow [2024-10-11 14:15:17,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 865 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-11 14:15:17,839 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 544 flow [2024-10-11 14:15:17,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-10-11 14:15:17,840 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 29 predicate places. [2024-10-11 14:15:17,840 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 544 flow [2024-10-11 14:15:17,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:17,840 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:17,840 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:15:17,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:15:17,840 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:17,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1232035489, now seen corresponding path program 1 times [2024-10-11 14:15:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7599858] [2024-10-11 14:15:17,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:18,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7599858] [2024-10-11 14:15:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7599858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:18,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:18,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:15:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712893421] [2024-10-11 14:15:18,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:18,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 14:15:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 14:15:18,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 14:15:18,051 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:18,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 544 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:18,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:18,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:18,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:23,786 INFO L124 PetriNetUnfolderBase]: 33733/50865 cut-off events. [2024-10-11 14:15:23,787 INFO L125 PetriNetUnfolderBase]: For 95433/99619 co-relation queries the response was YES. [2024-10-11 14:15:24,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152810 conditions, 50865 events. 33733/50865 cut-off events. For 95433/99619 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 404280 event pairs, 3592 based on Foata normal form. 2747/52482 useless extension candidates. Maximal degree in co-relation 152774. Up to 20977 conditions per place. [2024-10-11 14:15:24,157 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 71 selfloop transitions, 10 changer transitions 5/123 dead transitions. [2024-10-11 14:15:24,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 123 transitions, 932 flow [2024-10-11 14:15:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:15:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:15:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 178 transitions. [2024-10-11 14:15:24,159 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.726530612244898 [2024-10-11 14:15:24,159 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 544 flow. Second operand 5 states and 178 transitions. [2024-10-11 14:15:24,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 123 transitions, 932 flow [2024-10-11 14:15:24,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 123 transitions, 901 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-10-11 14:15:24,809 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 548 flow [2024-10-11 14:15:24,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=85, 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=548, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-10-11 14:15:24,810 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-10-11 14:15:24,810 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 548 flow [2024-10-11 14:15:24,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:24,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:24,810 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, 1, 1] [2024-10-11 14:15:24,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:15:24,810 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:24,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash -118071740, now seen corresponding path program 1 times [2024-10-11 14:15:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432001796] [2024-10-11 14:15:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:25,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432001796] [2024-10-11 14:15:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432001796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:25,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:25,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 14:15:25,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513622731] [2024-10-11 14:15:25,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:25,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 14:15:25,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 14:15:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 14:15:25,072 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:25,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 548 flow. Second operand has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:15:29,702 INFO L124 PetriNetUnfolderBase]: 26417/39785 cut-off events. [2024-10-11 14:15:29,703 INFO L125 PetriNetUnfolderBase]: For 80673/86154 co-relation queries the response was YES. [2024-10-11 14:15:29,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131308 conditions, 39785 events. 26417/39785 cut-off events. For 80673/86154 co-relation queries the response was YES. Maximal size of possible extension queue 2094. Compared 306861 event pairs, 1412 based on Foata normal form. 2254/41035 useless extension candidates. Maximal degree in co-relation 131269. Up to 12976 conditions per place. [2024-10-11 14:15:29,987 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 81 selfloop transitions, 14 changer transitions 5/137 dead transitions. [2024-10-11 14:15:29,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 137 transitions, 1033 flow [2024-10-11 14:15:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:15:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:15:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-10-11 14:15:29,989 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7312925170068028 [2024-10-11 14:15:29,989 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 548 flow. Second operand 6 states and 215 transitions. [2024-10-11 14:15:29,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 137 transitions, 1033 flow [2024-10-11 14:15:30,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 137 transitions, 1007 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-11 14:15:30,105 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 608 flow [2024-10-11 14:15:30,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-10-11 14:15:30,106 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 35 predicate places. [2024-10-11 14:15:30,107 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 608 flow [2024-10-11 14:15:30,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.0) internal successors, (144), 6 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:30,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:15:30,107 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, 1, 1, 1, 1, 1] [2024-10-11 14:15:30,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:15:30,107 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-10-11 14:15:30,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:15:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash 601255363, now seen corresponding path program 1 times [2024-10-11 14:15:30,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:15:30,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583913918] [2024-10-11 14:15:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:15:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:15:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:15:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:15:30,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:15:30,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583913918] [2024-10-11 14:15:30,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583913918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:15:30,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:15:30,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 14:15:30,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003390929] [2024-10-11 14:15:30,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:15:30,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:15:30,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:15:30,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:15:30,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:15:30,489 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-10-11 14:15:30,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 608 flow. Second operand has 7 states, 7 states have (on average 23.857142857142858) internal successors, (167), 7 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:15:30,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:15:30,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-10-11 14:15:30,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand