./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:30:31,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:30:31,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:30:31,503 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:30:31,504 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:30:31,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:30:31,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:30:31,523 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:30:31,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:30:31,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:30:31,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:30:31,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:30:31,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:30:31,525 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:30:31,526 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:30:31,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:30:31,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:30:31,527 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:30:31,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:30:31,527 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:30:31,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:30:31,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:30:31,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:30:31,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:30:31,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:30:31,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:30:31,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:30:31,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:30:31,529 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:30:31,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:30:31,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:30:31,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:30:31,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:30:31,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:30:31,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:30:31,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:30:31,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:30:31,532 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-11-10 10:30:31,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:30:31,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:30:31,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:30:31,802 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:30:31,802 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:30:31,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-10 10:30:33,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:30:33,392 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:30:33,393 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-11-10 10:30:33,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927f27617/54bb7d35f9ef4903aaf57056b57a7aad/FLAG6e051c94a [2024-11-10 10:30:33,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927f27617/54bb7d35f9ef4903aaf57056b57a7aad [2024-11-10 10:30:33,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:30:33,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:30:33,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:30:33,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:30:33,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:30:33,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9cc282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33, skipping insertion in model container [2024-11-10 10:30:33,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,446 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:30:33,639 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-10 10:30:33,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:30:33,657 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:30:33,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3822,3835] [2024-11-10 10:30:33,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:30:33,696 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:30:33,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33 WrapperNode [2024-11-10 10:30:33,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:30:33,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:30:33,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:30:33,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:30:33,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,738 INFO L138 Inliner]: procedures = 26, calls = 53, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 247 [2024-11-10 10:30:33,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:30:33,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:30:33,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:30:33,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:30:33,749 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,752 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,769 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-10 10:30:33,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,783 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:30:33,794 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:30:33,794 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:30:33,794 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:30:33,795 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (1/1) ... [2024-11-10 10:30:33,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:30:33,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:33,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:30:33,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:30:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:30:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:30:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:30:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:30:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:30:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:30:33,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:30:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:30:33,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:30:33,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:30:33,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:30:33,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:30:33,887 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:30:33,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:30:33,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:30:33,891 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:30:34,027 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:30:34,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:30:34,446 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:30:34,447 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:30:34,770 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:30:34,770 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:30:34,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:30:34 BoogieIcfgContainer [2024-11-10 10:30:34,773 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:30:34,775 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:30:34,775 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:30:34,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:30:34,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:30:33" (1/3) ... [2024-11-10 10:30:34,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b95cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:30:34, skipping insertion in model container [2024-11-10 10:30:34,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:30:33" (2/3) ... [2024-11-10 10:30:34,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b95cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:30:34, skipping insertion in model container [2024-11-10 10:30:34,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:30:34" (3/3) ... [2024-11-10 10:30:34,781 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-11-10 10:30:34,797 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:30:34,798 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:30:34,798 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:30:34,863 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-11-10 10:30:34,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 164 flow [2024-11-10 10:30:34,949 INFO L124 PetriNetUnfolderBase]: 10/55 cut-off events. [2024-11-10 10:30:34,949 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:30:34,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 55 events. 10/55 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-10 10:30:34,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 62 transitions, 164 flow [2024-11-10 10:30:34,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 54 transitions, 138 flow [2024-11-10 10:30:34,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:30:34,981 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;@54e2f55c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:30:34,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-10 10:30:34,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:30:34,994 INFO L124 PetriNetUnfolderBase]: 10/53 cut-off events. [2024-11-10 10:30:34,994 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:30:34,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:34,995 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, 1, 1] [2024-11-10 10:30:34,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:35,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:35,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1778633914, now seen corresponding path program 1 times [2024-11-10 10:30:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929359665] [2024-11-10 10:30:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:35,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929359665] [2024-11-10 10:30:35,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929359665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:35,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:35,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:30:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383824526] [2024-11-10 10:30:35,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:35,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:30:35,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:30:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:30:35,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-10 10:30:35,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-10 10:30:35,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:35,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-10 10:30:35,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:36,196 INFO L124 PetriNetUnfolderBase]: 8056/10917 cut-off events. [2024-11-10 10:30:36,197 INFO L125 PetriNetUnfolderBase]: For 681/681 co-relation queries the response was YES. [2024-11-10 10:30:36,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 10917 events. 8056/10917 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 51610 event pairs, 6946 based on Foata normal form. 1/9788 useless extension candidates. Maximal degree in co-relation 22710. Up to 10883 conditions per place. [2024-11-10 10:30:36,261 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 44 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-11-10 10:30:36,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 218 flow [2024-11-10 10:30:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:30:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:30:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-10 10:30:36,273 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-10 10:30:36,274 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 138 flow. Second operand 2 states and 68 transitions. [2024-11-10 10:30:36,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 218 flow [2024-11-10 10:30:36,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 198 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:30:36,291 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 110 flow [2024-11-10 10:30:36,294 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-11-10 10:30:36,297 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2024-11-10 10:30:36,299 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 110 flow [2024-11-10 10:30:36,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 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) [2024-11-10 10:30:36,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:36,300 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, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:36,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:30:36,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:36,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1488779836, now seen corresponding path program 1 times [2024-11-10 10:30:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625068199] [2024-11-10 10:30:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:36,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625068199] [2024-11-10 10:30:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625068199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:36,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:30:36,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161618174] [2024-11-10 10:30:36,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:36,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:30:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:30:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:30:36,503 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-10 10:30:36,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:36,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:36,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-10 10:30:36,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:38,234 INFO L124 PetriNetUnfolderBase]: 19637/26492 cut-off events. [2024-11-10 10:30:38,235 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-11-10 10:30:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53477 conditions, 26492 events. 19637/26492 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 141879 event pairs, 8966 based on Foata normal form. 1/23649 useless extension candidates. Maximal degree in co-relation 53474. Up to 11200 conditions per place. [2024-11-10 10:30:38,382 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 108 selfloop transitions, 6 changer transitions 1/121 dead transitions. [2024-11-10 10:30:38,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 121 transitions, 498 flow [2024-11-10 10:30:38,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:30:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:30:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-11-10 10:30:38,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-10 10:30:38,384 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 110 flow. Second operand 4 states and 156 transitions. [2024-11-10 10:30:38,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 121 transitions, 498 flow [2024-11-10 10:30:38,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 121 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:38,388 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 151 flow [2024-11-10 10:30:38,388 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-11-10 10:30:38,389 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2024-11-10 10:30:38,390 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 151 flow [2024-11-10 10:30:38,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:38,390 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:38,390 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, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:38,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:30:38,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:38,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:38,392 INFO L85 PathProgramCache]: Analyzing trace with hash 881354490, now seen corresponding path program 2 times [2024-11-10 10:30:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:38,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176071478] [2024-11-10 10:30:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:38,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:38,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:38,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176071478] [2024-11-10 10:30:38,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176071478] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:38,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:38,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:30:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234489883] [2024-11-10 10:30:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:38,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:30:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:38,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:30:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:30:38,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-10 10:30:38,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:38,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:38,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-10 10:30:38,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:41,242 INFO L124 PetriNetUnfolderBase]: 30683/41355 cut-off events. [2024-11-10 10:30:41,242 INFO L125 PetriNetUnfolderBase]: For 4855/4858 co-relation queries the response was YES. [2024-11-10 10:30:41,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89212 conditions, 41355 events. 30683/41355 cut-off events. For 4855/4858 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 230941 event pairs, 10805 based on Foata normal form. 1/36737 useless extension candidates. Maximal degree in co-relation 89206. Up to 20481 conditions per place. [2024-11-10 10:30:41,478 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 108 selfloop transitions, 10 changer transitions 1/125 dead transitions. [2024-11-10 10:30:41,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 125 transitions, 563 flow [2024-11-10 10:30:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:30:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:30:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-11-10 10:30:41,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.60546875 [2024-11-10 10:30:41,480 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 151 flow. Second operand 4 states and 155 transitions. [2024-11-10 10:30:41,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 125 transitions, 563 flow [2024-11-10 10:30:41,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 125 transitions, 563 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:41,488 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 219 flow [2024-11-10 10:30:41,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-11-10 10:30:41,490 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2024-11-10 10:30:41,490 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 219 flow [2024-11-10 10:30:41,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:30:41,491 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:41,491 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:41,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:30:41,491 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:41,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 257225176, now seen corresponding path program 1 times [2024-11-10 10:30:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778604059] [2024-11-10 10:30:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:41,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778604059] [2024-11-10 10:30:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778604059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:41,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:30:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239249255] [2024-11-10 10:30:41,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:41,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:30:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:30:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:30:41,660 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:30:41,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-10 10:30:41,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:41,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:30:41,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:45,072 INFO L124 PetriNetUnfolderBase]: 46892/63487 cut-off events. [2024-11-10 10:30:45,072 INFO L125 PetriNetUnfolderBase]: For 21941/21950 co-relation queries the response was YES. [2024-11-10 10:30:45,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145170 conditions, 63487 events. 46892/63487 cut-off events. For 21941/21950 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 376793 event pairs, 31113 based on Foata normal form. 799/57126 useless extension candidates. Maximal degree in co-relation 145161. Up to 41254 conditions per place. [2024-11-10 10:30:45,561 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 126 selfloop transitions, 6 changer transitions 1/138 dead transitions. [2024-11-10 10:30:45,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 138 transitions, 734 flow [2024-11-10 10:30:45,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:30:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:30:45,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-11-10 10:30:45,564 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-11-10 10:30:45,564 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 219 flow. Second operand 6 states and 170 transitions. [2024-11-10 10:30:45,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 138 transitions, 734 flow [2024-11-10 10:30:45,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 138 transitions, 726 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-11-10 10:30:45,640 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 271 flow [2024-11-10 10:30:45,640 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-10 10:30:45,641 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-11-10 10:30:45,641 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 271 flow [2024-11-10 10:30:45,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-10 10:30:45,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:45,642 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:45,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:30:45,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:45,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1389344302, now seen corresponding path program 1 times [2024-11-10 10:30:45,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:45,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339326071] [2024-11-10 10:30:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:45,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:45,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339326071] [2024-11-10 10:30:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339326071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:30:45,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:30:45,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:30:45,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313997036] [2024-11-10 10:30:45,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:30:45,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:30:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:30:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:30:45,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:30:45,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-10 10:30:45,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:45,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:30:45,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:48,726 INFO L124 PetriNetUnfolderBase]: 37183/50562 cut-off events. [2024-11-10 10:30:48,726 INFO L125 PetriNetUnfolderBase]: For 20503/20512 co-relation queries the response was YES. [2024-11-10 10:30:48,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115992 conditions, 50562 events. 37183/50562 cut-off events. For 20503/20512 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 289443 event pairs, 30077 based on Foata normal form. 758/45390 useless extension candidates. Maximal degree in co-relation 115978. Up to 41254 conditions per place. [2024-11-10 10:30:49,262 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 55 selfloop transitions, 2 changer transitions 46/108 dead transitions. [2024-11-10 10:30:49,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 108 transitions, 584 flow [2024-11-10 10:30:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:30:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:30:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-11-10 10:30:49,266 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-11-10 10:30:49,266 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 271 flow. Second operand 6 states and 147 transitions. [2024-11-10 10:30:49,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 108 transitions, 584 flow [2024-11-10 10:30:49,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 108 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:49,277 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 245 flow [2024-11-10 10:30:49,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-11-10 10:30:49,278 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-10 10:30:49,278 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 245 flow [2024-11-10 10:30:49,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-10 10:30:49,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:49,278 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:49,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:30:49,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:49,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1661494841, now seen corresponding path program 1 times [2024-11-10 10:30:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333242964] [2024-11-10 10:30:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333242964] [2024-11-10 10:30:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333242964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129330973] [2024-11-10 10:30:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:49,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:49,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:49,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:49,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:30:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:49,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:30:49,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:49,608 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:49,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129330973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:49,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:49,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 10:30:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556158811] [2024-11-10 10:30:49,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:49,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:30:49,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:30:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:30:49,686 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:30:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 245 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-11-10 10:30:49,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:49,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:30:49,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:53,838 INFO L124 PetriNetUnfolderBase]: 46892/63489 cut-off events. [2024-11-10 10:30:53,838 INFO L125 PetriNetUnfolderBase]: For 30450/30459 co-relation queries the response was YES. [2024-11-10 10:30:54,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150861 conditions, 63489 events. 46892/63489 cut-off events. For 30450/30459 co-relation queries the response was YES. Maximal size of possible extension queue 1771. Compared 381152 event pairs, 24105 based on Foata normal form. 799/57128 useless extension candidates. Maximal degree in co-relation 150845. Up to 30624 conditions per place. [2024-11-10 10:30:54,246 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 160 selfloop transitions, 8 changer transitions 1/174 dead transitions. [2024-11-10 10:30:54,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 174 transitions, 985 flow [2024-11-10 10:30:54,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:30:54,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:30:54,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-11-10 10:30:54,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.423828125 [2024-11-10 10:30:54,248 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 245 flow. Second operand 8 states and 217 transitions. [2024-11-10 10:30:54,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 174 transitions, 985 flow [2024-11-10 10:30:54,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 174 transitions, 955 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-11-10 10:30:54,348 INFO L231 Difference]: Finished difference. Result has 75 places, 68 transitions, 300 flow [2024-11-10 10:30:54,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=300, PETRI_PLACES=75, PETRI_TRANSITIONS=68} [2024-11-10 10:30:54,349 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2024-11-10 10:30:54,349 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 68 transitions, 300 flow [2024-11-10 10:30:54,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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) [2024-11-10 10:30:54,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:54,350 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:54,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 10:30:54,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 10:30:54,552 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:54,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1836028733, now seen corresponding path program 1 times [2024-11-10 10:30:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862164291] [2024-11-10 10:30:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:54,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862164291] [2024-11-10 10:30:54,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862164291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:54,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992143612] [2024-11-10 10:30:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:54,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:54,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:54,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:54,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:30:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:54,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:30:54,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:54,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992143612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:54,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 10:30:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303550956] [2024-11-10 10:30:54,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:54,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:30:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:54,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:30:54,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:30:54,941 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:30:54,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 68 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-11-10 10:30:54,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:54,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:30:54,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:30:58,041 INFO L124 PetriNetUnfolderBase]: 36481/49862 cut-off events. [2024-11-10 10:30:58,041 INFO L125 PetriNetUnfolderBase]: For 24096/24105 co-relation queries the response was YES. [2024-11-10 10:30:58,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119529 conditions, 49862 events. 36481/49862 cut-off events. For 24096/24105 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 289960 event pairs, 17518 based on Foata normal form. 1460/45392 useless extension candidates. Maximal degree in co-relation 119513. Up to 21142 conditions per place. [2024-11-10 10:30:58,337 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 85 selfloop transitions, 5 changer transitions 48/143 dead transitions. [2024-11-10 10:30:58,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 143 transitions, 829 flow [2024-11-10 10:30:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:30:58,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:30:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-11-10 10:30:58,339 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-11-10 10:30:58,339 INFO L175 Difference]: Start difference. First operand has 75 places, 68 transitions, 300 flow. Second operand 8 states and 192 transitions. [2024-11-10 10:30:58,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 143 transitions, 829 flow [2024-11-10 10:30:58,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 143 transitions, 823 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 10:30:58,356 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 290 flow [2024-11-10 10:30:58,356 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=290, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-11-10 10:30:58,356 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 28 predicate places. [2024-11-10 10:30:58,357 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 290 flow [2024-11-10 10:30:58,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.5) internal successors, (174), 12 states have internal predecessors, (174), 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) [2024-11-10 10:30:58,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:30:58,357 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:30:58,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:30:58,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-10 10:30:58,558 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:30:58,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:30:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1263205830, now seen corresponding path program 2 times [2024-11-10 10:30:58,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:30:58,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769647827] [2024-11-10 10:30:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:30:58,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:30:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:30:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:30:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769647827] [2024-11-10 10:30:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769647827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:30:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854383838] [2024-11-10 10:30:58,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:30:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:30:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:30:58,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:30:58,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:30:58,775 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:30:58,775 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:30:58,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:30:58,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:30:59,095 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:59,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:30:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:30:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854383838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:30:59,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:30:59,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-10 10:30:59,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080625535] [2024-11-10 10:30:59,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:30:59,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-10 10:30:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:30:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-10 10:30:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:30:59,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:30:59,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-11-10 10:30:59,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:30:59,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:30:59,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:01,268 INFO L124 PetriNetUnfolderBase]: 23295/31556 cut-off events. [2024-11-10 10:31:01,269 INFO L125 PetriNetUnfolderBase]: For 26095/26104 co-relation queries the response was YES. [2024-11-10 10:31:01,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85053 conditions, 31556 events. 23295/31556 cut-off events. For 26095/26104 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 170505 event pairs, 11753 based on Foata normal form. 830/28809 useless extension candidates. Maximal degree in co-relation 85033. Up to 24876 conditions per place. [2024-11-10 10:31:01,543 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 76 selfloop transitions, 8 changer transitions 0/89 dead transitions. [2024-11-10 10:31:01,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 546 flow [2024-11-10 10:31:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:31:01,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:31:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-10 10:31:01,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29910714285714285 [2024-11-10 10:31:01,545 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 290 flow. Second operand 7 states and 134 transitions. [2024-11-10 10:31:01,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 546 flow [2024-11-10 10:31:01,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 89 transitions, 498 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-11-10 10:31:01,643 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 292 flow [2024-11-10 10:31:01,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-10 10:31:01,644 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2024-11-10 10:31:01,644 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 292 flow [2024-11-10 10:31:01,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-11-10 10:31:01,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:01,645 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:01,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:31:01,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:01,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:31:01,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1450693124, now seen corresponding path program 1 times [2024-11-10 10:31:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103152884] [2024-11-10 10:31:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:01,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:01,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:01,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103152884] [2024-11-10 10:31:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103152884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:01,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963682633] [2024-11-10 10:31:01,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:01,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:01,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:02,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:02,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:31:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:02,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-10 10:31:02,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:02,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:02,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:02,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963682633] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:02,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:31:02,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-11-10 10:31:02,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655355171] [2024-11-10 10:31:02,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:31:02,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:31:02,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:02,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:31:02,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-10 10:31:02,263 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:31:02,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:02,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:31:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:04,054 INFO L124 PetriNetUnfolderBase]: 19893/26925 cut-off events. [2024-11-10 10:31:04,054 INFO L125 PetriNetUnfolderBase]: For 18261/18270 co-relation queries the response was YES. [2024-11-10 10:31:04,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70458 conditions, 26925 events. 19893/26925 cut-off events. For 18261/18270 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 142129 event pairs, 11581 based on Foata normal form. 589/24349 useless extension candidates. Maximal degree in co-relation 70443. Up to 17847 conditions per place. [2024-11-10 10:31:04,230 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 95 selfloop transitions, 6 changer transitions 1/107 dead transitions. [2024-11-10 10:31:04,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 107 transitions, 655 flow [2024-11-10 10:31:04,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:31:04,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:31:04,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-11-10 10:31:04,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-11-10 10:31:04,231 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 292 flow. Second operand 6 states and 134 transitions. [2024-11-10 10:31:04,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 107 transitions, 655 flow [2024-11-10 10:31:04,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 107 transitions, 624 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-11-10 10:31:04,247 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 293 flow [2024-11-10 10:31:04,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2024-11-10 10:31:04,247 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-11-10 10:31:04,248 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 293 flow [2024-11-10 10:31:04,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:31:04,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:04,249 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:04,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:31:04,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:04,449 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:31:04,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash 842032226, now seen corresponding path program 1 times [2024-11-10 10:31:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:04,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148676610] [2024-11-10 10:31:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:04,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:04,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:05,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148676610] [2024-11-10 10:31:05,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148676610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:05,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726344481] [2024-11-10 10:31:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:05,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:05,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:05,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:31:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:05,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:31:05,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:05,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-10 10:31:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:05,349 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:05,443 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:05,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-10 10:31:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726344481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:05,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:05,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-10 10:31:05,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342750757] [2024-11-10 10:31:05,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:05,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 10:31:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:05,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 10:31:05,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:31:05,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-10 10:31:05,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 293 flow. Second operand has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 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) [2024-11-10 10:31:05,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:05,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-10 10:31:05,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:09,798 INFO L124 PetriNetUnfolderBase]: 36133/48843 cut-off events. [2024-11-10 10:31:09,798 INFO L125 PetriNetUnfolderBase]: For 30530/30539 co-relation queries the response was YES. [2024-11-10 10:31:10,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125579 conditions, 48843 events. 36133/48843 cut-off events. For 30530/30539 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 276603 event pairs, 10516 based on Foata normal form. 1/43118 useless extension candidates. Maximal degree in co-relation 125563. Up to 15771 conditions per place. [2024-11-10 10:31:10,134 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 266 selfloop transitions, 28 changer transitions 3/303 dead transitions. [2024-11-10 10:31:10,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 303 transitions, 1670 flow [2024-11-10 10:31:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:31:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:31:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 406 transitions. [2024-11-10 10:31:10,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-11-10 10:31:10,136 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 293 flow. Second operand 14 states and 406 transitions. [2024-11-10 10:31:10,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 303 transitions, 1670 flow [2024-11-10 10:31:10,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 303 transitions, 1660 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:31:10,191 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 467 flow [2024-11-10 10:31:10,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=467, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-10 10:31:10,192 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 33 predicate places. [2024-11-10 10:31:10,192 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 467 flow [2024-11-10 10:31:10,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.210526315789474) internal successors, (270), 19 states have internal predecessors, (270), 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) [2024-11-10 10:31:10,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:10,192 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:10,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 10:31:10,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-10 10:31:10,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:31:10,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 453048140, now seen corresponding path program 2 times [2024-11-10 10:31:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:10,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490142036] [2024-11-10 10:31:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:10,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:10,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490142036] [2024-11-10 10:31:10,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490142036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:10,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362145090] [2024-11-10 10:31:10,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:31:10,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:10,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:10,935 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:10,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:31:11,018 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:31:11,018 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:31:11,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-10 10:31:11,022 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:11,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:11,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-10 10:31:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:11,503 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:11,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:11,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 14 [2024-11-10 10:31:12,104 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362145090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:12,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 30 [2024-11-10 10:31:12,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866811384] [2024-11-10 10:31:12,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:12,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-10 10:31:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-10 10:31:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2024-11-10 10:31:12,114 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-10 10:31:12,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 467 flow. Second operand has 31 states, 31 states have (on average 12.774193548387096) internal successors, (396), 31 states have internal predecessors, (396), 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) [2024-11-10 10:31:12,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:12,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-10 10:31:12,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:31:20,998 INFO L124 PetriNetUnfolderBase]: 68542/92824 cut-off events. [2024-11-10 10:31:20,998 INFO L125 PetriNetUnfolderBase]: For 78595/78604 co-relation queries the response was YES. [2024-11-10 10:31:21,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249560 conditions, 92824 events. 68542/92824 cut-off events. For 78595/78604 co-relation queries the response was YES. Maximal size of possible extension queue 1994. Compared 563424 event pairs, 12266 based on Foata normal form. 4/81674 useless extension candidates. Maximal degree in co-relation 249540. Up to 30717 conditions per place. [2024-11-10 10:31:21,723 INFO L140 encePairwiseOnDemand]: 50/64 looper letters, 506 selfloop transitions, 104 changer transitions 28/643 dead transitions. [2024-11-10 10:31:21,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 643 transitions, 3755 flow [2024-11-10 10:31:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-10 10:31:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-10 10:31:21,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 864 transitions. [2024-11-10 10:31:21,726 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-11-10 10:31:21,726 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 467 flow. Second operand 32 states and 864 transitions. [2024-11-10 10:31:21,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 643 transitions, 3755 flow [2024-11-10 10:31:22,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 643 transitions, 3590 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-11-10 10:31:22,012 INFO L231 Difference]: Finished difference. Result has 124 places, 177 transitions, 1405 flow [2024-11-10 10:31:22,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1405, PETRI_PLACES=124, PETRI_TRANSITIONS=177} [2024-11-10 10:31:22,013 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2024-11-10 10:31:22,013 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 177 transitions, 1405 flow [2024-11-10 10:31:22,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.774193548387096) internal successors, (396), 31 states have internal predecessors, (396), 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) [2024-11-10 10:31:22,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:31:22,014 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:31:22,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:31:22,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:22,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-10 10:31:22,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:31:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1864463812, now seen corresponding path program 1 times [2024-11-10 10:31:22,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:31:22,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190979504] [2024-11-10 10:31:22,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:22,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:31:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:31:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:31:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190979504] [2024-11-10 10:31:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190979504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:31:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852479702] [2024-11-10 10:31:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:31:22,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:31:22,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:31:22,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:31:22,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:31:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:31:22,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-10 10:31:22,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:31:22,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-10 10:31:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:22,858 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:31:22,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:31:22,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2024-11-10 10:31:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:31:22,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852479702] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:31:22,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:31:22,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2024-11-10 10:31:22,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751944534] [2024-11-10 10:31:22,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:31:22,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-10 10:31:22,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:31:22,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-10 10:31:22,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-10 10:31:22,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 64 [2024-11-10 10:31:22,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 177 transitions, 1405 flow. Second operand has 19 states, 19 states have (on average 13.894736842105264) internal successors, (264), 19 states have internal predecessors, (264), 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) [2024-11-10 10:31:22,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:31:22,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 64 [2024-11-10 10:31:22,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand