./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-min-max-1.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/parallel-min-max-1.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 bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:26:57,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:26:57,480 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:26:57,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:26:57,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:26:57,517 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:26:57,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:26:57,518 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:26:57,519 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:26:57,523 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:26:57,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:26:57,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:26:57,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:26:57,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:26:57,524 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:26:57,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:26:57,525 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:26:57,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:26:57,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:26:57,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:26:57,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:26:57,526 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:26:57,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:26:57,527 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:26:57,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:26:57,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:26:57,528 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:26:57,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:26:57,529 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:26:57,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:26:57,529 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:26:57,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:26:57,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:57,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:26:57,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:26:57,531 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:26:57,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:26:57,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:26:57,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:26:57,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:26:57,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:26:57,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:26:57,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf26be9bd61f36f1b6136fc4e500a91a95d08528025fd00027577283116c4a35 [2024-11-16 19:26:57,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:26:57,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:26:57,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:26:57,822 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:26:57,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:26:57,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-16 19:26:59,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:26:59,395 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:26:59,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-11-16 19:26:59,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c62265b4/b5d3b3bfe071451e935dcafdd686cd8f/FLAG0df5b642b [2024-11-16 19:26:59,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c62265b4/b5d3b3bfe071451e935dcafdd686cd8f [2024-11-16 19:26:59,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:26:59,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:26:59,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:59,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:26:59,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:26:59,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb32ee1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59, skipping insertion in model container [2024-11-16 19:26:59,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:26:59,652 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-min-max-1.wvr.c[2642,2655] [2024-11-16 19:26:59,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:59,668 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:26:59,701 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-min-max-1.wvr.c[2642,2655] [2024-11-16 19:26:59,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:26:59,730 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:26:59,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59 WrapperNode [2024-11-16 19:26:59,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:26:59,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:59,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:26:59,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:26:59,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,773 INFO L138 Inliner]: procedures = 22, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-11-16 19:26:59,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:26:59,777 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:26:59,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:26:59,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:26:59,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,811 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-11-16 19:26:59,811 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:26:59,825 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:26:59,825 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:26:59,825 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:26:59,829 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (1/1) ... [2024-11-16 19:26:59,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:26:59,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:59,857 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 19:26:59,859 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 19:26:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:26:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:26:59,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:26:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:26:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:26:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-16 19:26:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-16 19:26:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:26:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:26:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:26:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:26:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:26:59,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:26:59,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:26:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:26:59,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:26:59,903 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 19:27:00,025 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:27:00,030 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:27:00,325 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:27:00,326 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:27:00,502 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:27:00,502 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:27:00,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:27:00 BoogieIcfgContainer [2024-11-16 19:27:00,503 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:27:00,506 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:27:00,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:27:00,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:27:00,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:26:59" (1/3) ... [2024-11-16 19:27:00,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5361786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:00, skipping insertion in model container [2024-11-16 19:27:00,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:26:59" (2/3) ... [2024-11-16 19:27:00,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5361786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:00, skipping insertion in model container [2024-11-16 19:27:00,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:27:00" (3/3) ... [2024-11-16 19:27:00,514 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-11-16 19:27:00,530 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:27:00,531 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:27:00,531 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:27:00,586 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:27:00,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 149 flow [2024-11-16 19:27:00,676 INFO L124 PetriNetUnfolderBase]: 8/61 cut-off events. [2024-11-16 19:27:00,679 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:27:00,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 8/61 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-11-16 19:27:00,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 64 transitions, 149 flow [2024-11-16 19:27:00,689 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 138 flow [2024-11-16 19:27:00,701 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:27:00,708 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;@2b9e3ad6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:27:00,708 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:27:00,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:27:00,729 INFO L124 PetriNetUnfolderBase]: 8/59 cut-off events. [2024-11-16 19:27:00,729 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 19:27:00,729 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:00,730 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] [2024-11-16 19:27:00,731 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 1 more)] === [2024-11-16 19:27:00,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash 956288654, now seen corresponding path program 1 times [2024-11-16 19:27:00,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:00,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063303404] [2024-11-16 19:27:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:00,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:00,998 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 19:27:00,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:00,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063303404] [2024-11-16 19:27:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063303404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:00,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:00,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:27:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374155875] [2024-11-16 19:27:01,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:01,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:27:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:27:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:27:01,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-11-16 19:27:01,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:27:01,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:01,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-11-16 19:27:01,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:01,506 INFO L124 PetriNetUnfolderBase]: 1700/2709 cut-off events. [2024-11-16 19:27:01,507 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-11-16 19:27:01,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 2709 events. 1700/2709 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14595 event pairs, 1266 based on Foata normal form. 276/2755 useless extension candidates. Maximal degree in co-relation 5068. Up to 2399 conditions per place. [2024-11-16 19:27:01,533 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 45 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2024-11-16 19:27:01,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 222 flow [2024-11-16 19:27:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:27:01,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:27:01,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 78 transitions. [2024-11-16 19:27:01,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-11-16 19:27:01,548 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 138 flow. Second operand 2 states and 78 transitions. [2024-11-16 19:27:01,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 222 flow [2024-11-16 19:27:01,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-16 19:27:01,560 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 120 flow [2024-11-16 19:27:01,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-16 19:27:01,567 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-16 19:27:01,567 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 120 flow [2024-11-16 19:27:01,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 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 19:27:01,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:01,568 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, 1] [2024-11-16 19:27:01,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:27:01,569 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 1 more)] === [2024-11-16 19:27:01,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:01,570 INFO L85 PathProgramCache]: Analyzing trace with hash 379176242, now seen corresponding path program 1 times [2024-11-16 19:27:01,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:01,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995005446] [2024-11-16 19:27:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:01,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:01,902 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 19:27:01,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:01,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995005446] [2024-11-16 19:27:01,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995005446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:01,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:01,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462974086] [2024-11-16 19:27:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:01,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:27:01,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:01,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:27:01,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:27:01,913 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:27:01,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 19:27:01,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:01,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:27:01,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:02,359 INFO L124 PetriNetUnfolderBase]: 2573/3918 cut-off events. [2024-11-16 19:27:02,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:27:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7705 conditions, 3918 events. 2573/3918 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 20893 event pairs, 1431 based on Foata normal form. 0/3515 useless extension candidates. Maximal degree in co-relation 7702. Up to 2589 conditions per place. [2024-11-16 19:27:02,386 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 65 selfloop transitions, 3 changer transitions 0/78 dead transitions. [2024-11-16 19:27:02,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 78 transitions, 300 flow [2024-11-16 19:27:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:27:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:27:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-11-16 19:27:02,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47265625 [2024-11-16 19:27:02,391 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 120 flow. Second operand 4 states and 121 transitions. [2024-11-16 19:27:02,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 78 transitions, 300 flow [2024-11-16 19:27:02,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:27:02,395 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 134 flow [2024-11-16 19:27:02,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-16 19:27:02,397 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-11-16 19:27:02,398 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 134 flow [2024-11-16 19:27:02,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 19:27:02,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:02,399 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, 1, 1, 1] [2024-11-16 19:27:02,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:27:02,399 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 1 more)] === [2024-11-16 19:27:02,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -221984235, now seen corresponding path program 1 times [2024-11-16 19:27:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:02,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758328751] [2024-11-16 19:27:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:02,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:02,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758328751] [2024-11-16 19:27:02,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758328751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:02,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:02,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70419191] [2024-11-16 19:27:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:02,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:27:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:27:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:27:02,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:27:02,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:27:02,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:02,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:27:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:03,011 INFO L124 PetriNetUnfolderBase]: 3380/5093 cut-off events. [2024-11-16 19:27:03,012 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-11-16 19:27:03,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10491 conditions, 5093 events. 3380/5093 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 26632 event pairs, 1936 based on Foata normal form. 0/4513 useless extension candidates. Maximal degree in co-relation 10486. Up to 3408 conditions per place. [2024-11-16 19:27:03,041 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 66 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-11-16 19:27:03,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 79 transitions, 321 flow [2024-11-16 19:27:03,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:27:03,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:27:03,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-16 19:27:03,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-11-16 19:27:03,045 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 134 flow. Second operand 4 states and 120 transitions. [2024-11-16 19:27:03,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 79 transitions, 321 flow [2024-11-16 19:27:03,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:27:03,048 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 144 flow [2024-11-16 19:27:03,049 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-11-16 19:27:03,050 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-11-16 19:27:03,051 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 144 flow [2024-11-16 19:27:03,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 19:27:03,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:03,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:03,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:27:03,052 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 1 more)] === [2024-11-16 19:27:03,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash 7639222, now seen corresponding path program 1 times [2024-11-16 19:27:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:03,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081501687] [2024-11-16 19:27:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:03,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:03,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:03,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081501687] [2024-11-16 19:27:03,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081501687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:03,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:03,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:27:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269372377] [2024-11-16 19:27:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:03,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:27:03,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:03,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:27:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:27:03,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 64 [2024-11-16 19:27:03,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 19:27:03,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:03,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 64 [2024-11-16 19:27:03,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:03,633 INFO L124 PetriNetUnfolderBase]: 2930/4503 cut-off events. [2024-11-16 19:27:03,634 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-11-16 19:27:03,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9473 conditions, 4503 events. 2930/4503 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 23530 event pairs, 2338 based on Foata normal form. 0/4064 useless extension candidates. Maximal degree in co-relation 9467. Up to 4156 conditions per place. [2024-11-16 19:27:03,665 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 46 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-16 19:27:03,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 244 flow [2024-11-16 19:27:03,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:27:03,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:27:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-16 19:27:03,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-11-16 19:27:03,667 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 144 flow. Second operand 4 states and 104 transitions. [2024-11-16 19:27:03,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 244 flow [2024-11-16 19:27:03,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:27:03,671 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 154 flow [2024-11-16 19:27:03,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-16 19:27:03,673 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-11-16 19:27:03,673 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 154 flow [2024-11-16 19:27:03,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 19:27:03,674 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:03,674 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:03,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:27:03,675 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 1 more)] === [2024-11-16 19:27:03,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:03,676 INFO L85 PathProgramCache]: Analyzing trace with hash -419651998, now seen corresponding path program 1 times [2024-11-16 19:27:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:03,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798338573] [2024-11-16 19:27:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:04,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798338573] [2024-11-16 19:27:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798338573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502341526] [2024-11-16 19:27:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:04,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:04,024 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 19:27:04,025 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 19:27:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:04,177 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:27:04,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:04,485 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 29 treesize of output 13 [2024-11-16 19:27:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:04,576 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502341526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:04,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:04,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-16 19:27:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144463535] [2024-11-16 19:27:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:04,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:27:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:04,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:27:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-16 19:27:04,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-11-16 19:27:04,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 154 flow. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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 19:27:04,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:04,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-11-16 19:27:04,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:05,630 INFO L124 PetriNetUnfolderBase]: 3897/6072 cut-off events. [2024-11-16 19:27:05,630 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-11-16 19:27:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12763 conditions, 6072 events. 3897/6072 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 33470 event pairs, 567 based on Foata normal form. 0/5710 useless extension candidates. Maximal degree in co-relation 12756. Up to 2589 conditions per place. [2024-11-16 19:27:05,661 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 149 selfloop transitions, 19 changer transitions 0/176 dead transitions. [2024-11-16 19:27:05,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 761 flow [2024-11-16 19:27:05,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:27:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:27:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-11-16 19:27:05,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41051136363636365 [2024-11-16 19:27:05,663 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 154 flow. Second operand 11 states and 289 transitions. [2024-11-16 19:27:05,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 761 flow [2024-11-16 19:27:05,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 176 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:27:05,669 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 284 flow [2024-11-16 19:27:05,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-11-16 19:27:05,670 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 18 predicate places. [2024-11-16 19:27:05,670 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 284 flow [2024-11-16 19:27:05,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 10 states have internal predecessors, (155), 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 19:27:05,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:05,671 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:05,689 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 19:27:05,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:05,876 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 1 more)] === [2024-11-16 19:27:05,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1958853217, now seen corresponding path program 1 times [2024-11-16 19:27:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540266446] [2024-11-16 19:27:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 19:27:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540266446] [2024-11-16 19:27:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540266446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:06,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:27:06,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:27:06,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802012203] [2024-11-16 19:27:06,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:06,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:27:06,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:06,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:27:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:27:06,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-11-16 19:27:06,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 19:27:06,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:06,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-11-16 19:27:06,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:06,793 INFO L124 PetriNetUnfolderBase]: 4135/6531 cut-off events. [2024-11-16 19:27:06,794 INFO L125 PetriNetUnfolderBase]: For 5558/5701 co-relation queries the response was YES. [2024-11-16 19:27:06,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17661 conditions, 6531 events. 4135/6531 cut-off events. For 5558/5701 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 37756 event pairs, 663 based on Foata normal form. 140/6313 useless extension candidates. Maximal degree in co-relation 17647. Up to 3293 conditions per place. [2024-11-16 19:27:06,820 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 75 selfloop transitions, 4 changer transitions 56/149 dead transitions. [2024-11-16 19:27:06,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 149 transitions, 877 flow [2024-11-16 19:27:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:27:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:27:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-11-16 19:27:06,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-11-16 19:27:06,824 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 284 flow. Second operand 5 states and 170 transitions. [2024-11-16 19:27:06,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 149 transitions, 877 flow [2024-11-16 19:27:06,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 149 transitions, 865 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:27:06,840 INFO L231 Difference]: Finished difference. Result has 84 places, 75 transitions, 294 flow [2024-11-16 19:27:06,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=84, PETRI_TRANSITIONS=75} [2024-11-16 19:27:06,842 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 22 predicate places. [2024-11-16 19:27:06,842 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 75 transitions, 294 flow [2024-11-16 19:27:06,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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 19:27:06,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:06,842 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:06,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:27:06,843 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 1 more)] === [2024-11-16 19:27:06,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:06,843 INFO L85 PathProgramCache]: Analyzing trace with hash 536247609, now seen corresponding path program 2 times [2024-11-16 19:27:06,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:06,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407247539] [2024-11-16 19:27:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:06,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:07,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:07,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407247539] [2024-11-16 19:27:07,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407247539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:07,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137261467] [2024-11-16 19:27:07,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:27:07,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:07,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:07,158 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 19:27:07,160 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 19:27:07,258 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:07,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:07,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 19:27:07,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:07,521 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 15 treesize of output 7 [2024-11-16 19:27:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:07,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:27:07,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137261467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:27:07,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:27:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-16 19:27:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173941058] [2024-11-16 19:27:07,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:27:07,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:27:07,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:07,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:27:07,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-16 19:27:07,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:27:07,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 294 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 19:27:07,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:07,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:27:07,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:08,290 INFO L124 PetriNetUnfolderBase]: 2744/4374 cut-off events. [2024-11-16 19:27:08,291 INFO L125 PetriNetUnfolderBase]: For 3560/3657 co-relation queries the response was YES. [2024-11-16 19:27:08,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12172 conditions, 4374 events. 2744/4374 cut-off events. For 3560/3657 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23595 event pairs, 295 based on Foata normal form. 93/4359 useless extension candidates. Maximal degree in co-relation 12155. Up to 2121 conditions per place. [2024-11-16 19:27:08,317 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 127 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2024-11-16 19:27:08,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 152 transitions, 884 flow [2024-11-16 19:27:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:27:08,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:27:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-11-16 19:27:08,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.416015625 [2024-11-16 19:27:08,319 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 294 flow. Second operand 8 states and 213 transitions. [2024-11-16 19:27:08,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 152 transitions, 884 flow [2024-11-16 19:27:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 152 transitions, 874 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-16 19:27:08,329 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 346 flow [2024-11-16 19:27:08,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2024-11-16 19:27:08,329 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 26 predicate places. [2024-11-16 19:27:08,330 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 346 flow [2024-11-16 19:27:08,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 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 19:27:08,330 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:08,330 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:08,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:27:08,531 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 [2024-11-16 19:27:08,531 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 1 more)] === [2024-11-16 19:27:08,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 864402298, now seen corresponding path program 1 times [2024-11-16 19:27:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:08,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148761156] [2024-11-16 19:27:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:08,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:08,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:08,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148761156] [2024-11-16 19:27:08,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148761156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:08,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587637880] [2024-11-16 19:27:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:08,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:08,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:08,793 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) [2024-11-16 19:27:08,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:27:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:08,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:27:08,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:09,044 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 15 treesize of output 7 [2024-11-16 19:27:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:09,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:09,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587637880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:09,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:09,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2024-11-16 19:27:09,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629976980] [2024-11-16 19:27:09,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:09,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 19:27:09,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 19:27:09,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:27:09,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2024-11-16 19:27:09,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 346 flow. Second operand has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 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 19:27:09,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:09,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2024-11-16 19:27:09,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:11,751 INFO L124 PetriNetUnfolderBase]: 4681/7490 cut-off events. [2024-11-16 19:27:11,752 INFO L125 PetriNetUnfolderBase]: For 11187/11334 co-relation queries the response was YES. [2024-11-16 19:27:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23462 conditions, 7490 events. 4681/7490 cut-off events. For 11187/11334 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 44538 event pairs, 303 based on Foata normal form. 148/7444 useless extension candidates. Maximal degree in co-relation 23444. Up to 1160 conditions per place. [2024-11-16 19:27:11,795 INFO L140 encePairwiseOnDemand]: 47/64 looper letters, 291 selfloop transitions, 79 changer transitions 63/443 dead transitions. [2024-11-16 19:27:11,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 443 transitions, 2785 flow [2024-11-16 19:27:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-16 19:27:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-16 19:27:11,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 832 transitions. [2024-11-16 19:27:11,801 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35135135135135137 [2024-11-16 19:27:11,801 INFO L175 Difference]: Start difference. First operand has 88 places, 78 transitions, 346 flow. Second operand 37 states and 832 transitions. [2024-11-16 19:27:11,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 443 transitions, 2785 flow [2024-11-16 19:27:11,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 443 transitions, 2704 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 19:27:11,825 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 915 flow [2024-11-16 19:27:11,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=915, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2024-11-16 19:27:11,825 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 75 predicate places. [2024-11-16 19:27:11,825 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 915 flow [2024-11-16 19:27:11,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 17.333333333333332) internal successors, (312), 18 states have internal predecessors, (312), 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 19:27:11,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:11,826 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:11,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:27:12,033 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 [2024-11-16 19:27:12,034 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 1 more)] === [2024-11-16 19:27:12,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2097799970, now seen corresponding path program 2 times [2024-11-16 19:27:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:12,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941040455] [2024-11-16 19:27:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:12,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941040455] [2024-11-16 19:27:12,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941040455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:12,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316931642] [2024-11-16 19:27:12,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:27:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:12,270 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) [2024-11-16 19:27:12,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:27:12,364 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:27:12,364 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:12,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 19:27:12,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:12,419 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 15 treesize of output 7 [2024-11-16 19:27:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:12,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316931642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:12,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:12,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-16 19:27:12,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254629149] [2024-11-16 19:27:12,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:12,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 19:27:12,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 19:27:12,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-16 19:27:12,617 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2024-11-16 19:27:12,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 915 flow. Second operand has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 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 19:27:12,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2024-11-16 19:27:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:13,678 INFO L124 PetriNetUnfolderBase]: 4955/7892 cut-off events. [2024-11-16 19:27:13,678 INFO L125 PetriNetUnfolderBase]: For 28673/28831 co-relation queries the response was YES. [2024-11-16 19:27:13,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29843 conditions, 7892 events. 4955/7892 cut-off events. For 28673/28831 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 47031 event pairs, 572 based on Foata normal form. 159/7803 useless extension candidates. Maximal degree in co-relation 29807. Up to 3533 conditions per place. [2024-11-16 19:27:13,731 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 161 selfloop transitions, 34 changer transitions 82/289 dead transitions. [2024-11-16 19:27:13,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 289 transitions, 2381 flow [2024-11-16 19:27:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:27:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:27:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 358 transitions. [2024-11-16 19:27:13,734 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39955357142857145 [2024-11-16 19:27:13,734 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 915 flow. Second operand 14 states and 358 transitions. [2024-11-16 19:27:13,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 289 transitions, 2381 flow [2024-11-16 19:27:13,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 289 transitions, 2058 flow, removed 88 selfloop flow, removed 11 redundant places. [2024-11-16 19:27:13,816 INFO L231 Difference]: Finished difference. Result has 136 places, 151 transitions, 932 flow [2024-11-16 19:27:13,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=932, PETRI_PLACES=136, PETRI_TRANSITIONS=151} [2024-11-16 19:27:13,818 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 74 predicate places. [2024-11-16 19:27:13,818 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 151 transitions, 932 flow [2024-11-16 19:27:13,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 19.357142857142858) internal successors, (271), 14 states have internal predecessors, (271), 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 19:27:13,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:13,819 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:13,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:27:14,020 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 [2024-11-16 19:27:14,021 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:14,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 690944392, now seen corresponding path program 3 times [2024-11-16 19:27:14,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:14,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201103980] [2024-11-16 19:27:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:14,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:14,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201103980] [2024-11-16 19:27:14,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201103980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:14,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802976154] [2024-11-16 19:27:14,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:27:14,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:14,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:14,317 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) [2024-11-16 19:27:14,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:27:14,416 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 19:27:14,416 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:14,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:27:14,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:14,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:14,582 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 34 treesize of output 18 [2024-11-16 19:27:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:14,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802976154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:14,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-16 19:27:14,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004018687] [2024-11-16 19:27:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:14,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 19:27:14,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 19:27:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-11-16 19:27:14,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2024-11-16 19:27:14,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 151 transitions, 932 flow. Second operand has 20 states, 20 states have (on average 16.65) internal successors, (333), 20 states have internal predecessors, (333), 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 19:27:14,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:14,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2024-11-16 19:27:14,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:16,587 INFO L124 PetriNetUnfolderBase]: 4150/6508 cut-off events. [2024-11-16 19:27:16,587 INFO L125 PetriNetUnfolderBase]: For 20072/20072 co-relation queries the response was YES. [2024-11-16 19:27:16,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23513 conditions, 6508 events. 4150/6508 cut-off events. For 20072/20072 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 36029 event pairs, 547 based on Foata normal form. 1/6336 useless extension candidates. Maximal degree in co-relation 23481. Up to 3771 conditions per place. [2024-11-16 19:27:16,622 INFO L140 encePairwiseOnDemand]: 48/64 looper letters, 193 selfloop transitions, 71 changer transitions 72/346 dead transitions. [2024-11-16 19:27:16,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 346 transitions, 2423 flow [2024-11-16 19:27:16,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 19:27:16,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-16 19:27:16,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 565 transitions. [2024-11-16 19:27:16,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3395432692307692 [2024-11-16 19:27:16,625 INFO L175 Difference]: Start difference. First operand has 136 places, 151 transitions, 932 flow. Second operand 26 states and 565 transitions. [2024-11-16 19:27:16,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 346 transitions, 2423 flow [2024-11-16 19:27:16,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 346 transitions, 2361 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-11-16 19:27:16,691 INFO L231 Difference]: Finished difference. Result has 161 places, 185 transitions, 1317 flow [2024-11-16 19:27:16,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1317, PETRI_PLACES=161, PETRI_TRANSITIONS=185} [2024-11-16 19:27:16,692 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 99 predicate places. [2024-11-16 19:27:16,692 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 185 transitions, 1317 flow [2024-11-16 19:27:16,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.65) internal successors, (333), 20 states have internal predecessors, (333), 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 19:27:16,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:16,693 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:16,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 19:27:16,897 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 [2024-11-16 19:27:16,898 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:16,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:16,898 INFO L85 PathProgramCache]: Analyzing trace with hash -107558988, now seen corresponding path program 4 times [2024-11-16 19:27:16,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:16,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388189690] [2024-11-16 19:27:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:16,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:17,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388189690] [2024-11-16 19:27:17,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388189690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:17,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365796804] [2024-11-16 19:27:17,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:27:17,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:17,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:17,206 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) [2024-11-16 19:27:17,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:27:17,297 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:27:17,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:17,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 19:27:17,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:17,360 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 15 treesize of output 7 [2024-11-16 19:27:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:17,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:17,578 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:27:17,578 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 17 treesize of output 9 [2024-11-16 19:27:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365796804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:17,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:17,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 19 [2024-11-16 19:27:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730360681] [2024-11-16 19:27:17,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:17,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-16 19:27:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:17,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-16 19:27:17,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-16 19:27:17,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-11-16 19:27:17,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 185 transitions, 1317 flow. Second operand has 19 states, 19 states have (on average 15.421052631578947) internal successors, (293), 19 states have internal predecessors, (293), 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 19:27:17,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:17,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-11-16 19:27:17,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:22,105 INFO L124 PetriNetUnfolderBase]: 9220/14491 cut-off events. [2024-11-16 19:27:22,105 INFO L125 PetriNetUnfolderBase]: For 81514/81514 co-relation queries the response was YES. [2024-11-16 19:27:22,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58303 conditions, 14491 events. 9220/14491 cut-off events. For 81514/81514 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 94235 event pairs, 880 based on Foata normal form. 4/14215 useless extension candidates. Maximal degree in co-relation 58264. Up to 3478 conditions per place. [2024-11-16 19:27:22,190 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 508 selfloop transitions, 216 changer transitions 271/1003 dead transitions. [2024-11-16 19:27:22,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 1003 transitions, 8179 flow [2024-11-16 19:27:22,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-16 19:27:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-11-16 19:27:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 1757 transitions. [2024-11-16 19:27:22,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3229779411764706 [2024-11-16 19:27:22,196 INFO L175 Difference]: Start difference. First operand has 161 places, 185 transitions, 1317 flow. Second operand 85 states and 1757 transitions. [2024-11-16 19:27:22,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 1003 transitions, 8179 flow [2024-11-16 19:27:22,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 1003 transitions, 7974 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-11-16 19:27:22,444 INFO L231 Difference]: Finished difference. Result has 283 places, 341 transitions, 3288 flow [2024-11-16 19:27:22,445 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=85, PETRI_FLOW=3288, PETRI_PLACES=283, PETRI_TRANSITIONS=341} [2024-11-16 19:27:22,445 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 221 predicate places. [2024-11-16 19:27:22,446 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 341 transitions, 3288 flow [2024-11-16 19:27:22,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.421052631578947) internal successors, (293), 19 states have internal predecessors, (293), 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 19:27:22,446 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:22,446 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:22,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:27:22,650 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 [2024-11-16 19:27:22,651 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:22,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1394185410, now seen corresponding path program 5 times [2024-11-16 19:27:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297141061] [2024-11-16 19:27:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:27:23,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:23,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297141061] [2024-11-16 19:27:23,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297141061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:23,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312022321] [2024-11-16 19:27:23,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:27:23,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:23,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:23,032 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) [2024-11-16 19:27:23,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:27:23,120 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-16 19:27:23,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:23,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 19:27:23,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:23,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:23,278 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 34 treesize of output 18 [2024-11-16 19:27:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:23,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:23,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312022321] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:23,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:23,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-16 19:27:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357725649] [2024-11-16 19:27:23,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:23,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:27:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:27:23,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:27:23,777 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-11-16 19:27:23,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 341 transitions, 3288 flow. Second operand has 25 states, 25 states have (on average 14.76) internal successors, (369), 25 states have internal predecessors, (369), 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 19:27:23,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:23,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-11-16 19:27:23,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:33,118 INFO L124 PetriNetUnfolderBase]: 13440/21377 cut-off events. [2024-11-16 19:27:33,119 INFO L125 PetriNetUnfolderBase]: For 526557/526557 co-relation queries the response was YES. [2024-11-16 19:27:33,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127356 conditions, 21377 events. 13440/21377 cut-off events. For 526557/526557 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 146635 event pairs, 613 based on Foata normal form. 6/20799 useless extension candidates. Maximal degree in co-relation 127264. Up to 3975 conditions per place. [2024-11-16 19:27:33,383 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 661 selfloop transitions, 363 changer transitions 257/1289 dead transitions. [2024-11-16 19:27:33,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1289 transitions, 14521 flow [2024-11-16 19:27:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-16 19:27:33,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2024-11-16 19:27:33,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 2128 transitions. [2024-11-16 19:27:33,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30504587155963303 [2024-11-16 19:27:33,392 INFO L175 Difference]: Start difference. First operand has 283 places, 341 transitions, 3288 flow. Second operand 109 states and 2128 transitions. [2024-11-16 19:27:33,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1289 transitions, 14521 flow [2024-11-16 19:27:35,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 1289 transitions, 13051 flow, removed 673 selfloop flow, removed 25 redundant places. [2024-11-16 19:27:35,859 INFO L231 Difference]: Finished difference. Result has 379 places, 556 transitions, 6132 flow [2024-11-16 19:27:35,860 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2899, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=6132, PETRI_PLACES=379, PETRI_TRANSITIONS=556} [2024-11-16 19:27:35,861 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 317 predicate places. [2024-11-16 19:27:35,861 INFO L471 AbstractCegarLoop]: Abstraction has has 379 places, 556 transitions, 6132 flow [2024-11-16 19:27:35,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.76) internal successors, (369), 25 states have internal predecessors, (369), 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 19:27:35,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:27:35,861 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:27:35,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 19:27:36,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:36,062 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:27:36,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:27:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash 982046430, now seen corresponding path program 6 times [2024-11-16 19:27:36,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:27:36,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400918284] [2024-11-16 19:27:36,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:27:36,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:27:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:27:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:27:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400918284] [2024-11-16 19:27:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400918284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:27:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562387142] [2024-11-16 19:27:36,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:27:36,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:27:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:27:36,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:27:36,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:27:36,562 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-16 19:27:36,562 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:27:36,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 19:27:36,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:27:36,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 19:27:36,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 37 [2024-11-16 19:27:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:36,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:27:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:27:37,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562387142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:27:37,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:27:37,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2024-11-16 19:27:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563705428] [2024-11-16 19:27:37,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:27:37,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-16 19:27:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:27:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-16 19:27:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2024-11-16 19:27:37,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-11-16 19:27:37,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 556 transitions, 6132 flow. Second operand has 30 states, 30 states have (on average 14.333333333333334) internal successors, (430), 30 states have internal predecessors, (430), 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 19:27:37,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:27:37,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-11-16 19:27:37,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:27:53,406 INFO L124 PetriNetUnfolderBase]: 25062/39078 cut-off events. [2024-11-16 19:27:53,406 INFO L125 PetriNetUnfolderBase]: For 2018548/2018548 co-relation queries the response was YES. [2024-11-16 19:27:53,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285104 conditions, 39078 events. 25062/39078 cut-off events. For 2018548/2018548 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 288236 event pairs, 2437 based on Foata normal form. 10/38858 useless extension candidates. Maximal degree in co-relation 284989. Up to 10736 conditions per place. [2024-11-16 19:27:54,376 INFO L140 encePairwiseOnDemand]: 43/64 looper letters, 903 selfloop transitions, 656 changer transitions 596/2163 dead transitions. [2024-11-16 19:27:54,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 2163 transitions, 30209 flow [2024-11-16 19:27:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-16 19:27:54,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2024-11-16 19:27:54,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 2483 transitions. [2024-11-16 19:27:54,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3154217479674797 [2024-11-16 19:27:54,382 INFO L175 Difference]: Start difference. First operand has 379 places, 556 transitions, 6132 flow. Second operand 123 states and 2483 transitions. [2024-11-16 19:27:54,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 2163 transitions, 30209 flow [2024-11-16 19:28:02,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 2163 transitions, 25838 flow, removed 1736 selfloop flow, removed 34 redundant places. [2024-11-16 19:28:02,584 INFO L231 Difference]: Finished difference. Result has 497 places, 1045 transitions, 12751 flow [2024-11-16 19:28:02,584 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=4889, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=123, PETRI_FLOW=12751, PETRI_PLACES=497, PETRI_TRANSITIONS=1045} [2024-11-16 19:28:02,585 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 435 predicate places. [2024-11-16 19:28:02,585 INFO L471 AbstractCegarLoop]: Abstraction has has 497 places, 1045 transitions, 12751 flow [2024-11-16 19:28:02,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 14.333333333333334) internal successors, (430), 30 states have internal predecessors, (430), 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 19:28:02,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:28:02,585 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:28:02,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 19:28:02,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 19:28:02,786 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-16 19:28:02,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:28:02,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1471560154, now seen corresponding path program 7 times [2024-11-16 19:28:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:28:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704652724] [2024-11-16 19:28:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:28:02,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:28:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:28:03,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:28:03,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704652724] [2024-11-16 19:28:03,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704652724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:28:03,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519605970] [2024-11-16 19:28:03,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:28:03,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:28:03,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:28:03,076 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:28:03,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:28:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:28:03,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 19:28:03,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:28:03,217 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 15 treesize of output 7 [2024-11-16 19:28:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:28:03,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:28:03,345 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-16 19:28:03,346 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 9 [2024-11-16 19:28:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:28:03,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519605970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:28:03,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:28:03,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 21 [2024-11-16 19:28:03,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024358160] [2024-11-16 19:28:03,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:28:03,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 19:28:03,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:28:03,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 19:28:03,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:28:03,465 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 64 [2024-11-16 19:28:03,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1045 transitions, 12751 flow. Second operand has 21 states, 21 states have (on average 15.047619047619047) internal successors, (316), 21 states have internal predecessors, (316), 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 19:28:03,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:28:03,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 64 [2024-11-16 19:28:03,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand