./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/bench-exp3x3.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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:23:20,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:23:20,514 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:23:20,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:23:20,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:23:20,540 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:23:20,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:23:20,541 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:23:20,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:23:20,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:23:20,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:23:20,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:23:20,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:23:20,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:23:20,546 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:23:20,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:23:20,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:23:20,549 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:23:20,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:23:20,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:23:20,553 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:23:20,554 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:23:20,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:23:20,554 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:23:20,554 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:23:20,555 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:23:20,555 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:23:20,555 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:23:20,555 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:23:20,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:23:20,556 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:23:20,556 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:23:20,556 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:23:20,556 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:23:20,556 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:23:20,557 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:23:20,557 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:23:20,558 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:23:20,558 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:23:20,559 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:23:20,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:23:20,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:23:20,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-11-16 19:23:20,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:23:20,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:23:20,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:23:20,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:23:20,799 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:23:20,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-16 19:23:22,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:23:22,256 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:23:22,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-16 19:23:22,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a6c5f81/11e034cc4bb347dea4d03e9eeeb3654b/FLAGd9212359a [2024-11-16 19:23:22,279 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a6c5f81/11e034cc4bb347dea4d03e9eeeb3654b [2024-11-16 19:23:22,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:23:22,283 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:23:22,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:23:22,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:23:22,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:23:22,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50c216e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22, skipping insertion in model container [2024-11-16 19:23:22,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,318 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:23:22,507 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/bench-exp3x3.wvr.c[2703,2716] [2024-11-16 19:23:22,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:23:22,526 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:23:22,553 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/bench-exp3x3.wvr.c[2703,2716] [2024-11-16 19:23:22,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:23:22,573 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:23:22,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22 WrapperNode [2024-11-16 19:23:22,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:23:22,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:23:22,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:23:22,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:23:22,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,604 INFO L138 Inliner]: procedures = 21, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-11-16 19:23:22,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:23:22,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:23:22,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:23:22,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:23:22,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,633 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:23:22,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,637 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,638 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:23:22,642 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:23:22,642 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:23:22,643 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:23:22,643 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (1/1) ... [2024-11-16 19:23:22,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:23:22,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:23:22,678 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) [2024-11-16 19:23:22,681 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 [2024-11-16 19:23:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:23:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:23:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:23:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:23:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:23:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:23:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:23:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-16 19:23:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-16 19:23:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:23:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-16 19:23:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-16 19:23:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-16 19:23:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-16 19:23:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:23:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:23:22,719 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:23:22,807 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:23:22,809 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:23:22,990 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:23:22,992 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:23:23,110 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:23:23,110 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:23:23,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:23:23 BoogieIcfgContainer [2024-11-16 19:23:23,110 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:23:23,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:23:23,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:23:23,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:23:23,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:23:22" (1/3) ... [2024-11-16 19:23:23,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdd1294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:23:23, skipping insertion in model container [2024-11-16 19:23:23,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:23:22" (2/3) ... [2024-11-16 19:23:23,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdd1294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:23:23, skipping insertion in model container [2024-11-16 19:23:23,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:23:23" (3/3) ... [2024-11-16 19:23:23,117 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-11-16 19:23:23,131 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:23:23,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:23:23,131 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:23:23,182 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-16 19:23:23,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 64 transitions, 170 flow [2024-11-16 19:23:23,246 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2024-11-16 19:23:23,246 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:23:23,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 58 events. 12/58 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-16 19:23:23,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 64 transitions, 170 flow [2024-11-16 19:23:23,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 57 transitions, 150 flow [2024-11-16 19:23:23,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:23:23,265 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;@63e5b5b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:23:23,265 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:23:23,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:23:23,277 INFO L124 PetriNetUnfolderBase]: 12/56 cut-off events. [2024-11-16 19:23:23,278 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:23:23,278 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:23,278 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, 1] [2024-11-16 19:23:23,279 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:23,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash -2131926163, now seen corresponding path program 1 times [2024-11-16 19:23:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4281859] [2024-11-16 19:23:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:23,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4281859] [2024-11-16 19:23:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4281859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:23,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:23,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:23:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554948258] [2024-11-16 19:23:23,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:23,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:23:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:23:23,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:23:23,590 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-11-16 19:23:23,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 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) [2024-11-16 19:23:23,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:23,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-11-16 19:23:23,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:25,233 INFO L124 PetriNetUnfolderBase]: 14584/18591 cut-off events. [2024-11-16 19:23:25,234 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-11-16 19:23:25,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36461 conditions, 18591 events. 14584/18591 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 91676 event pairs, 6928 based on Foata normal form. 7382/24609 useless extension candidates. Maximal degree in co-relation 30976. Up to 16771 conditions per place. [2024-11-16 19:23:25,397 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 32 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-16 19:23:25,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 202 flow [2024-11-16 19:23:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:23:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:23:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 88 transitions. [2024-11-16 19:23:25,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-11-16 19:23:25,410 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 150 flow. Second operand 2 states and 88 transitions. [2024-11-16 19:23:25,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 202 flow [2024-11-16 19:23:25,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 178 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-16 19:23:25,440 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 114 flow [2024-11-16 19:23:25,444 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-16 19:23:25,447 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2024-11-16 19:23:25,448 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 114 flow [2024-11-16 19:23:25,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 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) [2024-11-16 19:23:25,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:25,449 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:23:25,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:23:25,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:25,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -205318831, now seen corresponding path program 1 times [2024-11-16 19:23:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:25,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645038385] [2024-11-16 19:23:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:25,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645038385] [2024-11-16 19:23:25,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645038385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:25,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:23:25,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435776204] [2024-11-16 19:23:25,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:25,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:23:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:25,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:23:25,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:23:25,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 64 [2024-11-16 19:23:25,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-16 19:23:25,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:25,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 64 [2024-11-16 19:23:25,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:27,271 INFO L124 PetriNetUnfolderBase]: 18895/26404 cut-off events. [2024-11-16 19:23:27,271 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-11-16 19:23:27,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48576 conditions, 26404 events. 18895/26404 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 158953 event pairs, 1570 based on Foata normal form. 1/26114 useless extension candidates. Maximal degree in co-relation 48573. Up to 20725 conditions per place. [2024-11-16 19:23:27,416 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 53 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-16 19:23:27,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 80 transitions, 305 flow [2024-11-16 19:23:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:23:27,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:23:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-16 19:23:27,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7135416666666666 [2024-11-16 19:23:27,420 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 114 flow. Second operand 3 states and 137 transitions. [2024-11-16 19:23:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 80 transitions, 305 flow [2024-11-16 19:23:27,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:23:27,425 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 161 flow [2024-11-16 19:23:27,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2024-11-16 19:23:27,426 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2024-11-16 19:23:27,426 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 161 flow [2024-11-16 19:23:27,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-16 19:23:27,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:27,426 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:27,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:23:27,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:27,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:27,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1723909396, now seen corresponding path program 1 times [2024-11-16 19:23:27,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:27,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092690412] [2024-11-16 19:23:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:27,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:27,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092690412] [2024-11-16 19:23:27,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092690412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:27,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:27,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:27,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276475908] [2024-11-16 19:23:27,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:27,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:27,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:27,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:27,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:27,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:27,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:30,606 INFO L124 PetriNetUnfolderBase]: 44789/55043 cut-off events. [2024-11-16 19:23:30,607 INFO L125 PetriNetUnfolderBase]: For 17524/17524 co-relation queries the response was YES. [2024-11-16 19:23:30,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130537 conditions, 55043 events. 44789/55043 cut-off events. For 17524/17524 co-relation queries the response was YES. Maximal size of possible extension queue 2329. Compared 265026 event pairs, 8334 based on Foata normal form. 588/55381 useless extension candidates. Maximal degree in co-relation 130532. Up to 21202 conditions per place. [2024-11-16 19:23:30,930 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 111 selfloop transitions, 10 changer transitions 0/138 dead transitions. [2024-11-16 19:23:30,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 138 transitions, 635 flow [2024-11-16 19:23:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:23:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:23:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-11-16 19:23:30,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.70625 [2024-11-16 19:23:30,932 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 161 flow. Second operand 5 states and 226 transitions. [2024-11-16 19:23:30,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 138 transitions, 635 flow [2024-11-16 19:23:30,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 138 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:23:30,935 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 219 flow [2024-11-16 19:23:30,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-16 19:23:30,936 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2024-11-16 19:23:30,936 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 219 flow [2024-11-16 19:23:30,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:30,937 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:30,937 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:30,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:23:30,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:30,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1454572494, now seen corresponding path program 2 times [2024-11-16 19:23:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324705358] [2024-11-16 19:23:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:31,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:31,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324705358] [2024-11-16 19:23:31,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324705358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:31,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:31,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782611944] [2024-11-16 19:23:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:31,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:31,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:31,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:31,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:31,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:31,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:34,173 INFO L124 PetriNetUnfolderBase]: 42004/54997 cut-off events. [2024-11-16 19:23:34,174 INFO L125 PetriNetUnfolderBase]: For 34606/34606 co-relation queries the response was YES. [2024-11-16 19:23:34,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139562 conditions, 54997 events. 42004/54997 cut-off events. For 34606/34606 co-relation queries the response was YES. Maximal size of possible extension queue 2369. Compared 324357 event pairs, 9407 based on Foata normal form. 807/54014 useless extension candidates. Maximal degree in co-relation 139555. Up to 26248 conditions per place. [2024-11-16 19:23:34,566 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 108 selfloop transitions, 10 changer transitions 0/135 dead transitions. [2024-11-16 19:23:34,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 135 transitions, 666 flow [2024-11-16 19:23:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:23:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:23:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 225 transitions. [2024-11-16 19:23:34,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-11-16 19:23:34,569 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 219 flow. Second operand 5 states and 225 transitions. [2024-11-16 19:23:34,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 135 transitions, 666 flow [2024-11-16 19:23:34,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 666 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:23:34,577 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 273 flow [2024-11-16 19:23:34,578 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-11-16 19:23:34,578 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2024-11-16 19:23:34,579 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 273 flow [2024-11-16 19:23:34,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:34,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:34,579 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:34,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:23:34,580 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:34,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash 2117839732, now seen corresponding path program 1 times [2024-11-16 19:23:34,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:34,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048753983] [2024-11-16 19:23:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:34,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:34,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048753983] [2024-11-16 19:23:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048753983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:34,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:34,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863693298] [2024-11-16 19:23:34,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:34,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:34,712 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:34,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:34,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:34,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:34,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:37,789 INFO L124 PetriNetUnfolderBase]: 43298/52616 cut-off events. [2024-11-16 19:23:37,789 INFO L125 PetriNetUnfolderBase]: For 62078/62078 co-relation queries the response was YES. [2024-11-16 19:23:37,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146429 conditions, 52616 events. 43298/52616 cut-off events. For 62078/62078 co-relation queries the response was YES. Maximal size of possible extension queue 2236. Compared 245250 event pairs, 8515 based on Foata normal form. 684/52984 useless extension candidates. Maximal degree in co-relation 146419. Up to 20518 conditions per place. [2024-11-16 19:23:38,227 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 113 selfloop transitions, 8 changer transitions 0/138 dead transitions. [2024-11-16 19:23:38,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 714 flow [2024-11-16 19:23:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:23:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:23:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-16 19:23:38,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-16 19:23:38,228 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 273 flow. Second operand 5 states and 224 transitions. [2024-11-16 19:23:38,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 714 flow [2024-11-16 19:23:38,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 138 transitions, 705 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 19:23:38,268 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 278 flow [2024-11-16 19:23:38,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-16 19:23:38,269 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2024-11-16 19:23:38,270 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 278 flow [2024-11-16 19:23:38,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:38,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:38,270 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:38,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:23:38,271 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:38,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash -744599272, now seen corresponding path program 1 times [2024-11-16 19:23:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:38,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330718413] [2024-11-16 19:23:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:38,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:38,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:38,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330718413] [2024-11-16 19:23:38,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330718413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:23:38,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743233659] [2024-11-16 19:23:38,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:38,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:23:38,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:23:38,589 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) [2024-11-16 19:23:38,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:23:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:38,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:23:38,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:23:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:38,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:23:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:39,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743233659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:23:39,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:23:39,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-16 19:23:39,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289861818] [2024-11-16 19:23:39,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:23:39,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:23:39,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:39,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:23:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:23:39,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-11-16 19:23:39,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:39,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:39,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:45,760 INFO L124 PetriNetUnfolderBase]: 87959/113958 cut-off events. [2024-11-16 19:23:45,761 INFO L125 PetriNetUnfolderBase]: For 119106/126104 co-relation queries the response was YES. [2024-11-16 19:23:46,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298535 conditions, 113958 events. 87959/113958 cut-off events. For 119106/126104 co-relation queries the response was YES. Maximal size of possible extension queue 5395. Compared 729615 event pairs, 16332 based on Foata normal form. 2281/109697 useless extension candidates. Maximal degree in co-relation 298524. Up to 46099 conditions per place. [2024-11-16 19:23:46,803 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 120 selfloop transitions, 8 changer transitions 0/150 dead transitions. [2024-11-16 19:23:46,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 150 transitions, 891 flow [2024-11-16 19:23:46,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:23:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:23:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-11-16 19:23:46,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696875 [2024-11-16 19:23:46,805 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 278 flow. Second operand 5 states and 223 transitions. [2024-11-16 19:23:46,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 150 transitions, 891 flow [2024-11-16 19:23:46,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 876 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-16 19:23:46,827 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 324 flow [2024-11-16 19:23:46,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-11-16 19:23:46,828 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2024-11-16 19:23:46,828 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 324 flow [2024-11-16 19:23:46,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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) [2024-11-16 19:23:46,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:46,829 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:46,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:23:47,029 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 [2024-11-16 19:23:47,030 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:47,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1534484804, now seen corresponding path program 2 times [2024-11-16 19:23:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601440344] [2024-11-16 19:23:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:47,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:47,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:47,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601440344] [2024-11-16 19:23:47,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601440344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:47,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:47,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309358566] [2024-11-16 19:23:47,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:47,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:47,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:47,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:47,157 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:47,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:47,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:47,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:47,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:53,287 INFO L124 PetriNetUnfolderBase]: 72825/91821 cut-off events. [2024-11-16 19:23:53,287 INFO L125 PetriNetUnfolderBase]: For 135649/141363 co-relation queries the response was YES. [2024-11-16 19:23:53,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270676 conditions, 91821 events. 72825/91821 cut-off events. For 135649/141363 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 521083 event pairs, 9169 based on Foata normal form. 1701/90014 useless extension candidates. Maximal degree in co-relation 270661. Up to 34930 conditions per place. [2024-11-16 19:23:53,984 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 121 selfloop transitions, 11 changer transitions 0/154 dead transitions. [2024-11-16 19:23:53,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 973 flow [2024-11-16 19:23:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:23:53,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:23:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-16 19:23:53,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.68125 [2024-11-16 19:23:53,985 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 324 flow. Second operand 5 states and 218 transitions. [2024-11-16 19:23:53,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 973 flow [2024-11-16 19:23:54,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 973 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:23:54,198 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 385 flow [2024-11-16 19:23:54,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-16 19:23:54,198 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2024-11-16 19:23:54,198 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 385 flow [2024-11-16 19:23:54,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:54,199 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:54,199 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, 1, 1, 1, 1, 1] [2024-11-16 19:23:54,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:23:54,199 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:23:54,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:54,199 INFO L85 PathProgramCache]: Analyzing trace with hash -553794170, now seen corresponding path program 1 times [2024-11-16 19:23:54,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:54,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689460472] [2024-11-16 19:23:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:54,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689460472] [2024-11-16 19:23:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689460472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:54,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276132514] [2024-11-16 19:23:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:54,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:23:54,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:23:54,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:54,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:23:54,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:59,771 INFO L124 PetriNetUnfolderBase]: 71678/88846 cut-off events. [2024-11-16 19:23:59,771 INFO L125 PetriNetUnfolderBase]: For 158130/163844 co-relation queries the response was YES. [2024-11-16 19:24:00,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275271 conditions, 88846 events. 71678/88846 cut-off events. For 158130/163844 co-relation queries the response was YES. Maximal size of possible extension queue 4168. Compared 489234 event pairs, 5654 based on Foata normal form. 1722/87246 useless extension candidates. Maximal degree in co-relation 275254. Up to 33783 conditions per place. [2024-11-16 19:24:00,484 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 121 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2024-11-16 19:24:00,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 151 transitions, 982 flow [2024-11-16 19:24:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:24:00,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:24:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2024-11-16 19:24:00,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-16 19:24:00,486 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 385 flow. Second operand 5 states and 216 transitions. [2024-11-16 19:24:00,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 151 transitions, 982 flow [2024-11-16 19:24:00,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 151 transitions, 971 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:24:00,628 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 388 flow [2024-11-16 19:24:00,628 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-11-16 19:24:00,628 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2024-11-16 19:24:00,629 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 388 flow [2024-11-16 19:24:00,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:24:00,629 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:24:00,629 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, 1, 1, 1, 1, 1] [2024-11-16 19:24:00,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:24:00,629 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:24:00,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:24:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1632307134, now seen corresponding path program 1 times [2024-11-16 19:24:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:24:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101646054] [2024-11-16 19:24:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:24:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:00,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:24:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101646054] [2024-11-16 19:24:00,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101646054] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:24:00,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787976551] [2024-11-16 19:24:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:24:00,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:24:00,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:24:00,694 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) [2024-11-16 19:24:00,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:24:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:24:00,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:24:00,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:24:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:00,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:24:01,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:24:01,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787976551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:24:01,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:24:01,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-16 19:24:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220928246] [2024-11-16 19:24:01,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:24:01,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:24:01,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:24:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:24:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:24:01,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-11-16 19:24:01,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 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) [2024-11-16 19:24:01,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:24:01,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-11-16 19:24:01,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand