./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-inc-subseq.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 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:33:55,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:33:56,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:33:56,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:33:56,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:33:56,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:33:56,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:33:56,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:33:56,080 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:33:56,081 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:33:56,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:33:56,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:33:56,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:33:56,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:33:56,083 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:33:56,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:33:56,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:33:56,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:33:56,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:33:56,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:33:56,085 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:33:56,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:33:56,088 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:33:56,088 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:33:56,088 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:33:56,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:33:56,089 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:33:56,089 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:33:56,089 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:33:56,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:33:56,089 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:33:56,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:33:56,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:56,090 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:33:56,090 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:33:56,090 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:33:56,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:33:56,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:33:56,091 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:33:56,091 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:33:56,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:33:56,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:33:56,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-11-10 10:33:56,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:33:56,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:33:56,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:33:56,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:33:56,364 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:33:56,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-11-10 10:33:57,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:33:57,935 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:33:57,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-11-10 10:33:57,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1983b7b/891b15d2b9414909ab0773c103068d62/FLAG8cda89be2 [2024-11-10 10:33:58,327 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e1983b7b/891b15d2b9414909ab0773c103068d62 [2024-11-10 10:33:58,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:33:58,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:33:58,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:58,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:33:58,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:33:58,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b0e424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58, skipping insertion in model container [2024-11-10 10:33:58,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,355 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:33:58,549 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/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-10 10:33:58,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:58,569 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:33:58,594 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/popl20-more-inc-subseq.wvr.c[2950,2963] [2024-11-10 10:33:58,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:58,611 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:33:58,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58 WrapperNode [2024-11-10 10:33:58,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:58,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:58,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:33:58,612 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:33:58,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,646 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 183 [2024-11-10 10:33:58,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:58,647 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:33:58,647 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:33:58,647 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:33:58,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,690 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 2 writes are split as follows [0, 2]. [2024-11-10 10:33:58,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,702 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,713 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:33:58,714 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:33:58,714 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:33:58,714 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:33:58,715 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (1/1) ... [2024-11-10 10:33:58,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:58,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:33:58,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:33:58,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:33:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:33:58,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:33:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:33:58,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:33:58,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:33:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:33:58,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:33:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:33:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:33:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:33:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:33:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:33:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:33:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:33:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:33:58,812 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:33:58,926 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:33:58,928 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:33:59,280 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:33:59,280 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:33:59,442 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:33:59,442 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:33:59,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:59 BoogieIcfgContainer [2024-11-10 10:33:59,443 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:33:59,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:33:59,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:33:59,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:33:59,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:33:58" (1/3) ... [2024-11-10 10:33:59,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a24890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:59, skipping insertion in model container [2024-11-10 10:33:59,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:58" (2/3) ... [2024-11-10 10:33:59,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a24890e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:59, skipping insertion in model container [2024-11-10 10:33:59,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:59" (3/3) ... [2024-11-10 10:33:59,449 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-11-10 10:33:59,462 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:33:59,463 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:33:59,463 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:33:59,499 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 10:33:59,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 43 transitions, 100 flow [2024-11-10 10:33:59,549 INFO L124 PetriNetUnfolderBase]: 9/41 cut-off events. [2024-11-10 10:33:59,549 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:33:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 41 events. 9/41 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-11-10 10:33:59,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 43 transitions, 100 flow [2024-11-10 10:33:59,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 40 transitions, 92 flow [2024-11-10 10:33:59,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:33:59,567 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;@737138b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:33:59,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:33:59,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:33:59,576 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-11-10 10:33:59,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:33:59,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:59,577 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:59,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:33:59,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash -850540662, now seen corresponding path program 1 times [2024-11-10 10:33:59,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:59,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529328466] [2024-11-10 10:33:59,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:59,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529328466] [2024-11-10 10:33:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529328466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:59,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459702621] [2024-11-10 10:33:59,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:33:59,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:59,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:33:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:33:59,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 10:33:59,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:33:59,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:59,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 10:33:59,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:59,860 INFO L124 PetriNetUnfolderBase]: 149/280 cut-off events. [2024-11-10 10:33:59,860 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-10 10:33:59,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 280 events. 149/280 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1175 event pairs, 97 based on Foata normal form. 39/274 useless extension candidates. Maximal degree in co-relation 495. Up to 243 conditions per place. [2024-11-10 10:33:59,864 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 24 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-11-10 10:33:59,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 132 flow [2024-11-10 10:33:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:33:59,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:33:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-11-10 10:33:59,873 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-11-10 10:33:59,874 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 92 flow. Second operand 2 states and 56 transitions. [2024-11-10 10:33:59,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 132 flow [2024-11-10 10:33:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:33:59,878 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 76 flow [2024-11-10 10:33:59,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2024-11-10 10:33:59,882 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -3 predicate places. [2024-11-10 10:33:59,882 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 76 flow [2024-11-10 10:33:59,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:33:59,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:59,883 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:59,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:33:59,883 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:33:59,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:59,884 INFO L85 PathProgramCache]: Analyzing trace with hash -671723185, now seen corresponding path program 1 times [2024-11-10 10:33:59,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:59,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801359512] [2024-11-10 10:33:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:00,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:00,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801359512] [2024-11-10 10:34:00,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801359512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:00,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:34:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112844089] [2024-11-10 10:34:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:00,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:34:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:00,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:34:00,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:34:00,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-11-10 10:34:00,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:00,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-11-10 10:34:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:00,226 INFO L124 PetriNetUnfolderBase]: 236/417 cut-off events. [2024-11-10 10:34:00,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:34:00,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 417 events. 236/417 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1810 event pairs, 64 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 820. Up to 240 conditions per place. [2024-11-10 10:34:00,229 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 36 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2024-11-10 10:34:00,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 50 transitions, 183 flow [2024-11-10 10:34:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:34:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:34:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-10 10:34:00,231 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5348837209302325 [2024-11-10 10:34:00,231 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 76 flow. Second operand 4 states and 92 transitions. [2024-11-10 10:34:00,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 50 transitions, 183 flow [2024-11-10 10:34:00,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 50 transitions, 183 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:34:00,234 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 90 flow [2024-11-10 10:34:00,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-10 10:34:00,234 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-11-10 10:34:00,234 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 90 flow [2024-11-10 10:34:00,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:00,235 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] [2024-11-10 10:34:00,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:34:00,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:00,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:00,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1182612808, now seen corresponding path program 1 times [2024-11-10 10:34:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:00,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679231820] [2024-11-10 10:34:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:00,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:00,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:00,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:00,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679231820] [2024-11-10 10:34:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679231820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:00,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:34:00,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138583091] [2024-11-10 10:34:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:00,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:34:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:00,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:34:00,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:34:00,352 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:34:00,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:00,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:34:00,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:00,458 INFO L124 PetriNetUnfolderBase]: 219/399 cut-off events. [2024-11-10 10:34:00,458 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:34:00,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 399 events. 219/399 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1705 event pairs, 158 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 824. Up to 364 conditions per place. [2024-11-10 10:34:00,462 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 26 selfloop transitions, 2 changer transitions 1/39 dead transitions. [2024-11-10 10:34:00,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 152 flow [2024-11-10 10:34:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:34:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:34:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-10 10:34:00,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4476744186046512 [2024-11-10 10:34:00,465 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 90 flow. Second operand 4 states and 77 transitions. [2024-11-10 10:34:00,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 152 flow [2024-11-10 10:34:00,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:00,467 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 100 flow [2024-11-10 10:34:00,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2024-11-10 10:34:00,469 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-10 10:34:00,469 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 100 flow [2024-11-10 10:34:00,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,469 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:00,469 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] [2024-11-10 10:34:00,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:34:00,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:00,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2005588456, now seen corresponding path program 1 times [2024-11-10 10:34:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:00,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375869643] [2024-11-10 10:34:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:34:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375869643] [2024-11-10 10:34:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375869643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:00,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:00,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:34:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544912897] [2024-11-10 10:34:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:00,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:34:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:34:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:34:00,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 10:34:00,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:00,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 10:34:00,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:00,654 INFO L124 PetriNetUnfolderBase]: 333/651 cut-off events. [2024-11-10 10:34:00,654 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-10 10:34:00,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 651 events. 333/651 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3153 event pairs, 126 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 1262. Up to 277 conditions per place. [2024-11-10 10:34:00,658 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 36 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2024-11-10 10:34:00,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 214 flow [2024-11-10 10:34:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:34:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:34:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-10 10:34:00,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2024-11-10 10:34:00,659 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 100 flow. Second operand 3 states and 80 transitions. [2024-11-10 10:34:00,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 214 flow [2024-11-10 10:34:00,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 52 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 10:34:00,660 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 108 flow [2024-11-10 10:34:00,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2024-11-10 10:34:00,661 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2024-11-10 10:34:00,661 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 108 flow [2024-11-10 10:34:00,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,662 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:00,662 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] [2024-11-10 10:34:00,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:34:00,662 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:00,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1899438473, now seen corresponding path program 1 times [2024-11-10 10:34:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:00,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859638523] [2024-11-10 10:34:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:00,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:00,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859638523] [2024-11-10 10:34:00,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859638523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:00,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:00,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:34:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817016436] [2024-11-10 10:34:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:00,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:34:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:34:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:34:00,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 10:34:00,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:00,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 10:34:00,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:00,901 INFO L124 PetriNetUnfolderBase]: 336/670 cut-off events. [2024-11-10 10:34:00,901 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-10 10:34:00,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 670 events. 336/670 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3199 event pairs, 141 based on Foata normal form. 12/618 useless extension candidates. Maximal degree in co-relation 1385. Up to 406 conditions per place. [2024-11-10 10:34:00,904 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 35 selfloop transitions, 2 changer transitions 4/53 dead transitions. [2024-11-10 10:34:00,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 225 flow [2024-11-10 10:34:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:34:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:34:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-10 10:34:00,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6201550387596899 [2024-11-10 10:34:00,908 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-11-10 10:34:00,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 225 flow [2024-11-10 10:34:00,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:34:00,910 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 118 flow [2024-11-10 10:34:00,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2024-11-10 10:34:00,910 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2024-11-10 10:34:00,910 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 118 flow [2024-11-10 10:34:00,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:00,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:00,911 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] [2024-11-10 10:34:00,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:34:00,912 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:00,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2010983840, now seen corresponding path program 1 times [2024-11-10 10:34:00,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:00,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429687157] [2024-11-10 10:34:00,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:00,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:34:01,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429687157] [2024-11-10 10:34:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429687157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:01,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:01,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:34:01,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706859091] [2024-11-10 10:34:01,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:01,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:34:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:34:01,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:34:01,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:34:01,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:01,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:01,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:34:01,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:01,167 INFO L124 PetriNetUnfolderBase]: 421/866 cut-off events. [2024-11-10 10:34:01,167 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-10 10:34:01,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 866 events. 421/866 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4550 event pairs, 349 based on Foata normal form. 16/789 useless extension candidates. Maximal degree in co-relation 1857. Up to 574 conditions per place. [2024-11-10 10:34:01,172 INFO L140 encePairwiseOnDemand]: 38/43 looper letters, 29 selfloop transitions, 2 changer transitions 20/61 dead transitions. [2024-11-10 10:34:01,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 280 flow [2024-11-10 10:34:01,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:34:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:34:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-11-10 10:34:01,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49767441860465117 [2024-11-10 10:34:01,173 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 118 flow. Second operand 5 states and 107 transitions. [2024-11-10 10:34:01,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 280 flow [2024-11-10 10:34:01,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 61 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:34:01,175 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 132 flow [2024-11-10 10:34:01,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2024-11-10 10:34:01,176 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-11-10 10:34:01,176 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 132 flow [2024-11-10 10:34:01,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:01,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:01,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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] [2024-11-10 10:34:01,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:34:01,178 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:01,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:01,179 INFO L85 PathProgramCache]: Analyzing trace with hash 7975584, now seen corresponding path program 1 times [2024-11-10 10:34:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544684805] [2024-11-10 10:34:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:34:02,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544684805] [2024-11-10 10:34:02,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544684805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:02,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360054417] [2024-11-10 10:34:02,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:02,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:02,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:02,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:02,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:34:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:02,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:34:02,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:02,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-10 10:34:03,032 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-10 10:34:03,033 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 26 treesize of output 10 [2024-11-10 10:34:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:03,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:03,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:03,842 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 80 treesize of output 83 [2024-11-10 10:34:03,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 36 treesize of output 30 [2024-11-10 10:34:03,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:03,888 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 154 treesize of output 150 [2024-11-10 10:34:03,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:03,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 44 treesize of output 40 [2024-11-10 10:34:03,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:34:03,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 222 treesize of output 238 [2024-11-10 10:34:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:34:05,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360054417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:05,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:05,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 31 [2024-11-10 10:34:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915464585] [2024-11-10 10:34:05,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:05,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-10 10:34:05,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:05,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-10 10:34:05,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2024-11-10 10:34:05,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2024-11-10 10:34:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 132 flow. Second operand has 32 states, 32 states have (on average 11.59375) internal successors, (371), 32 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2024-11-10 10:34:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:09,983 INFO L124 PetriNetUnfolderBase]: 2172/3932 cut-off events. [2024-11-10 10:34:09,983 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2024-11-10 10:34:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8747 conditions, 3932 events. 2172/3932 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 24945 event pairs, 69 based on Foata normal form. 7/3535 useless extension candidates. Maximal degree in co-relation 8736. Up to 656 conditions per place. [2024-11-10 10:34:09,999 INFO L140 encePairwiseOnDemand]: 23/43 looper letters, 252 selfloop transitions, 86 changer transitions 158/503 dead transitions. [2024-11-10 10:34:10,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 503 transitions, 2365 flow [2024-11-10 10:34:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-10 10:34:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2024-11-10 10:34:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1012 transitions. [2024-11-10 10:34:10,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4057738572574178 [2024-11-10 10:34:10,004 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 132 flow. Second operand 58 states and 1012 transitions. [2024-11-10 10:34:10,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 503 transitions, 2365 flow [2024-11-10 10:34:10,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 503 transitions, 2347 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-10 10:34:10,013 INFO L231 Difference]: Finished difference. Result has 142 places, 132 transitions, 895 flow [2024-11-10 10:34:10,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=895, PETRI_PLACES=142, PETRI_TRANSITIONS=132} [2024-11-10 10:34:10,015 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2024-11-10 10:34:10,016 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 132 transitions, 895 flow [2024-11-10 10:34:10,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.59375) internal successors, (371), 32 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:10,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:10,017 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 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] [2024-11-10 10:34:10,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:34:10,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:10,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:10,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1175316625, now seen corresponding path program 2 times [2024-11-10 10:34:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:10,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527719162] [2024-11-10 10:34:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:34:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527719162] [2024-11-10 10:34:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527719162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029223452] [2024-11-10 10:34:10,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:34:10,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:10,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:10,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:34:10,384 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:34:10,384 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:10,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:10,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:34:10,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:34:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029223452] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:10,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2024-11-10 10:34:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225494128] [2024-11-10 10:34:10,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:10,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:34:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:10,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:34:10,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:34:10,575 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-11-10 10:34:10,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 132 transitions, 895 flow. Second operand has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:10,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:10,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-11-10 10:34:10,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:11,087 INFO L124 PetriNetUnfolderBase]: 1559/3313 cut-off events. [2024-11-10 10:34:11,087 INFO L125 PetriNetUnfolderBase]: For 27015/27165 co-relation queries the response was YES. [2024-11-10 10:34:11,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14637 conditions, 3313 events. 1559/3313 cut-off events. For 27015/27165 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22537 event pairs, 385 based on Foata normal form. 176/3313 useless extension candidates. Maximal degree in co-relation 14588. Up to 594 conditions per place. [2024-11-10 10:34:11,120 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 80 selfloop transitions, 18 changer transitions 118/226 dead transitions. [2024-11-10 10:34:11,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 226 transitions, 2045 flow [2024-11-10 10:34:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 10:34:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-10 10:34:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2024-11-10 10:34:11,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5290697674418605 [2024-11-10 10:34:11,123 INFO L175 Difference]: Start difference. First operand has 142 places, 132 transitions, 895 flow. Second operand 12 states and 273 transitions. [2024-11-10 10:34:11,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 226 transitions, 2045 flow [2024-11-10 10:34:11,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 226 transitions, 1711 flow, removed 163 selfloop flow, removed 15 redundant places. [2024-11-10 10:34:11,174 INFO L231 Difference]: Finished difference. Result has 126 places, 68 transitions, 431 flow [2024-11-10 10:34:11,175 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=431, PETRI_PLACES=126, PETRI_TRANSITIONS=68} [2024-11-10 10:34:11,177 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2024-11-10 10:34:11,178 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 68 transitions, 431 flow [2024-11-10 10:34:11,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.272727272727273) internal successors, (190), 11 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:11,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:11,178 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 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] [2024-11-10 10:34:11,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:34:11,379 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,SelfDestructingSolverStorable7 [2024-11-10 10:34:11,380 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:11,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 453886297, now seen corresponding path program 1 times [2024-11-10 10:34:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962350662] [2024-11-10 10:34:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:11,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:34:11,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962350662] [2024-11-10 10:34:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962350662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580120392] [2024-11-10 10:34:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:11,513 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:11,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:34:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:11,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:34:11,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:34:11,676 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:34:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:34:11,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580120392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:34:11,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:34:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-10 10:34:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279254855] [2024-11-10 10:34:11,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:34:11,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 10:34:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 10:34:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-10 10:34:11,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-11-10 10:34:11,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 68 transitions, 431 flow. Second operand has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:11,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:11,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-11-10 10:34:11,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:12,064 INFO L124 PetriNetUnfolderBase]: 1183/2308 cut-off events. [2024-11-10 10:34:12,064 INFO L125 PetriNetUnfolderBase]: For 7919/7960 co-relation queries the response was YES. [2024-11-10 10:34:12,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8943 conditions, 2308 events. 1183/2308 cut-off events. For 7919/7960 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13112 event pairs, 305 based on Foata normal form. 27/2221 useless extension candidates. Maximal degree in co-relation 8903. Up to 1194 conditions per place. [2024-11-10 10:34:12,083 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 80 selfloop transitions, 8 changer transitions 29/126 dead transitions. [2024-11-10 10:34:12,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 1019 flow [2024-11-10 10:34:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:34:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:34:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-11-10 10:34:12,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-11-10 10:34:12,084 INFO L175 Difference]: Start difference. First operand has 126 places, 68 transitions, 431 flow. Second operand 10 states and 187 transitions. [2024-11-10 10:34:12,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 1019 flow [2024-11-10 10:34:12,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 866 flow, removed 73 selfloop flow, removed 27 redundant places. [2024-11-10 10:34:12,101 INFO L231 Difference]: Finished difference. Result has 73 places, 69 transitions, 393 flow [2024-11-10 10:34:12,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=73, PETRI_TRANSITIONS=69} [2024-11-10 10:34:12,102 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 35 predicate places. [2024-11-10 10:34:12,102 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 69 transitions, 393 flow [2024-11-10 10:34:12,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:12,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:12,102 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 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] [2024-11-10 10:34:12,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 10:34:12,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:12,307 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:12,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1712622119, now seen corresponding path program 2 times [2024-11-10 10:34:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:12,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743718782] [2024-11-10 10:34:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-10 10:34:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:12,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743718782] [2024-11-10 10:34:12,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743718782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:34:12,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:34:12,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:34:12,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873493157] [2024-11-10 10:34:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:34:12,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:34:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:34:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:34:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:34:12,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-11-10 10:34:12,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 69 transitions, 393 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:12,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:34:12,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-11-10 10:34:12,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:34:12,662 INFO L124 PetriNetUnfolderBase]: 721/1499 cut-off events. [2024-11-10 10:34:12,662 INFO L125 PetriNetUnfolderBase]: For 1455/1481 co-relation queries the response was YES. [2024-11-10 10:34:12,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4155 conditions, 1499 events. 721/1499 cut-off events. For 1455/1481 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7653 event pairs, 291 based on Foata normal form. 3/1421 useless extension candidates. Maximal degree in co-relation 4135. Up to 1145 conditions per place. [2024-11-10 10:34:12,671 INFO L140 encePairwiseOnDemand]: 37/43 looper letters, 60 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-11-10 10:34:12,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 539 flow [2024-11-10 10:34:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:34:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:34:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-10 10:34:12,673 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5162790697674419 [2024-11-10 10:34:12,673 INFO L175 Difference]: Start difference. First operand has 73 places, 69 transitions, 393 flow. Second operand 5 states and 111 transitions. [2024-11-10 10:34:12,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 539 flow [2024-11-10 10:34:12,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 510 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-10 10:34:12,676 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 360 flow [2024-11-10 10:34:12,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2024-11-10 10:34:12,677 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 30 predicate places. [2024-11-10 10:34:12,677 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 360 flow [2024-11-10 10:34:12,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:34:12,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:34:12,678 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:34:12,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:34:12,678 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-10 10:34:12,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:34:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1416683771, now seen corresponding path program 3 times [2024-11-10 10:34:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:34:12,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586328732] [2024-11-10 10:34:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:34:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:34:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:34:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:34:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:34:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586328732] [2024-11-10 10:34:14,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586328732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:34:14,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437137350] [2024-11-10 10:34:14,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:34:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:34:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:34:14,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:34:14,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:34:14,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:34:14,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:34:14,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-10 10:34:14,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:34:16,098 INFO L349 Elim1Store]: treesize reduction 286, result has 59.9 percent of original size [2024-11-10 10:34:16,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 184 treesize of output 500 [2024-11-10 10:34:52,868 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:09,902 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:10,657 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:11,756 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:11,813 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:13,436 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:14,160 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:15,112 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-10 10:35:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:16,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:35:20,007 INFO L349 Elim1Store]: treesize reduction 155, result has 87.0 percent of original size [2024-11-10 10:35:20,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 255 treesize of output 1112