./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-difference-det.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-difference-det.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 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:32:05,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:32:05,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:32:05,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:32:05,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:32:05,846 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:32:05,847 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:32:05,847 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:32:05,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:32:05,848 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:32:05,848 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:32:05,849 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:32:05,849 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:32:05,849 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:32:05,849 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:32:05,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:32:05,850 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:32:05,850 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:32:05,850 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:32:05,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:32:05,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:32:05,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:32:05,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:32:05,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:32:05,854 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:32:05,854 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:32:05,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:32:05,855 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:32:05,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:32:05,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:32:05,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:32:05,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:32:05,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:32:05,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:32:05,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:32:05,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:32:05,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:32:05,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:32:05,857 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:32:05,857 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:32:05,857 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:32:05,857 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:32:05,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74892b4fb04a6fe0e809c110df08d9da57c5c90ea65da5b04a32432686fc90f8 [2024-11-10 10:32:06,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:32:06,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:32:06,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:32:06,060 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:32:06,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:32:06,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-10 10:32:07,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:32:07,411 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:32:07,412 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-difference-det.wvr.c [2024-11-10 10:32:07,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a61c0009/64a3845fcd414ae995974e258cbba278/FLAG49f31b384 [2024-11-10 10:32:07,444 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a61c0009/64a3845fcd414ae995974e258cbba278 [2024-11-10 10:32:07,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:32:07,447 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:32:07,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:32:07,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:32:07,451 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:32:07,452 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d0fa6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07, skipping insertion in model container [2024-11-10 10:32:07,452 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:32:07,624 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-difference-det.wvr.c[2247,2260] [2024-11-10 10:32:07,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:32:07,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:32:07,651 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-difference-det.wvr.c[2247,2260] [2024-11-10 10:32:07,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:32:07,673 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:32:07,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07 WrapperNode [2024-11-10 10:32:07,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:32:07,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:32:07,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:32:07,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:32:07,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,699 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-10 10:32:07,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:32:07,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:32:07,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:32:07,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:32:07,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,709 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,723 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:32:07,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,729 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:32:07,737 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:32:07,737 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:32:07,737 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:32:07,737 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (1/1) ... [2024-11-10 10:32:07,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:32:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:07,767 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 10:32:07,769 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 10:32:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:32:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:32:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:32:07,807 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:32:07,807 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:32:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:32:07,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:32:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:32:07,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:32:07,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:32:07,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:32:07,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:32:07,811 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 10:32:07,905 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:32:07,906 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:32:08,082 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:32:08,082 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:32:08,179 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:32:08,179 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:32:08,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:32:08 BoogieIcfgContainer [2024-11-10 10:32:08,180 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:32:08,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:32:08,182 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:32:08,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:32:08,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:32:07" (1/3) ... [2024-11-10 10:32:08,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea60e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:32:08, skipping insertion in model container [2024-11-10 10:32:08,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:32:07" (2/3) ... [2024-11-10 10:32:08,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea60e31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:32:08, skipping insertion in model container [2024-11-10 10:32:08,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:32:08" (3/3) ... [2024-11-10 10:32:08,186 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-difference-det.wvr.c [2024-11-10 10:32:08,197 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:32:08,197 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:32:08,197 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:32:08,236 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:32:08,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 132 flow [2024-11-10 10:32:08,296 INFO L124 PetriNetUnfolderBase]: 8/48 cut-off events. [2024-11-10 10:32:08,296 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:32:08,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 8/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 10:32:08,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 52 transitions, 132 flow [2024-11-10 10:32:08,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 47 transitions, 118 flow [2024-11-10 10:32:08,315 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:32:08,319 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;@4c1a9b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:32:08,320 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:32:08,333 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:32:08,333 INFO L124 PetriNetUnfolderBase]: 8/46 cut-off events. [2024-11-10 10:32:08,333 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:32:08,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:08,334 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:08,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:08,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1321796270, now seen corresponding path program 1 times [2024-11-10 10:32:08,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:08,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778025783] [2024-11-10 10:32:08,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:08,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:08,539 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 10:32:08,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:08,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778025783] [2024-11-10 10:32:08,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778025783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:08,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:08,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:32:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781617648] [2024-11-10 10:32:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:08,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:32:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:32:08,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:32:08,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-10 10:32:08,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 10:32:08,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:08,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-10 10:32:08,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:09,039 INFO L124 PetriNetUnfolderBase]: 3714/5238 cut-off events. [2024-11-10 10:32:09,040 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-10 10:32:09,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10430 conditions, 5238 events. 3714/5238 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 28399 event pairs, 2787 based on Foata normal form. 927/6028 useless extension candidates. Maximal degree in co-relation 9347. Up to 4851 conditions per place. [2024-11-10 10:32:09,071 INFO L140 encePairwiseOnDemand]: 48/52 looper letters, 32 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-10 10:32:09,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 174 flow [2024-11-10 10:32:09,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:32:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:32:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 66 transitions. [2024-11-10 10:32:09,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-10 10:32:09,080 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 118 flow. Second operand 2 states and 66 transitions. [2024-11-10 10:32:09,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 174 flow [2024-11-10 10:32:09,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 158 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:32:09,094 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 94 flow [2024-11-10 10:32:09,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-10 10:32:09,098 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-10 10:32:09,098 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 94 flow [2024-11-10 10:32:09,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 10:32:09,099 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:09,099 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:09,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:32:09,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:09,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:09,100 INFO L85 PathProgramCache]: Analyzing trace with hash 238544656, now seen corresponding path program 1 times [2024-11-10 10:32:09,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:09,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744786546] [2024-11-10 10:32:09,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:09,264 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 10:32:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:09,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744786546] [2024-11-10 10:32:09,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744786546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:09,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:09,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:32:09,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890153226] [2024-11-10 10:32:09,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:09,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:32:09,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:32:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:32:09,269 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-10 10:32:09,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:09,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:09,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-10 10:32:09,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:09,679 INFO L124 PetriNetUnfolderBase]: 5145/7412 cut-off events. [2024-11-10 10:32:09,681 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-11-10 10:32:09,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14296 conditions, 7412 events. 5145/7412 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 42896 event pairs, 1020 based on Foata normal form. 1/7169 useless extension candidates. Maximal degree in co-relation 14293. Up to 5288 conditions per place. [2024-11-10 10:32:09,710 INFO L140 encePairwiseOnDemand]: 46/52 looper letters, 51 selfloop transitions, 5 changer transitions 1/68 dead transitions. [2024-11-10 10:32:09,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 68 transitions, 265 flow [2024-11-10 10:32:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:32:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:32:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-10 10:32:09,712 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-10 10:32:09,712 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 94 flow. Second operand 3 states and 103 transitions. [2024-11-10 10:32:09,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 68 transitions, 265 flow [2024-11-10 10:32:09,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 265 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:32:09,715 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 127 flow [2024-11-10 10:32:09,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-11-10 10:32:09,716 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-10 10:32:09,717 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 127 flow [2024-11-10 10:32:09,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:09,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:09,717 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:09,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:32:09,718 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:09,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:09,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1072475936, now seen corresponding path program 1 times [2024-11-10 10:32:09,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:09,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509136822] [2024-11-10 10:32:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:09,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:09,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509136822] [2024-11-10 10:32:09,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509136822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:09,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:09,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:32:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122524678] [2024-11-10 10:32:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:09,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:32:09,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:32:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:32:09,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-10 10:32:09,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:09,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-10 10:32:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:11,021 INFO L124 PetriNetUnfolderBase]: 15110/20948 cut-off events. [2024-11-10 10:32:11,021 INFO L125 PetriNetUnfolderBase]: For 2526/2602 co-relation queries the response was YES. [2024-11-10 10:32:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45481 conditions, 20948 events. 15110/20948 cut-off events. For 2526/2602 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 133300 event pairs, 5455 based on Foata normal form. 156/19861 useless extension candidates. Maximal degree in co-relation 45476. Up to 10756 conditions per place. [2024-11-10 10:32:11,106 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 108 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2024-11-10 10:32:11,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 123 transitions, 568 flow [2024-11-10 10:32:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:32:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:32:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-11-10 10:32:11,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6230769230769231 [2024-11-10 10:32:11,108 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 127 flow. Second operand 5 states and 162 transitions. [2024-11-10 10:32:11,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 123 transitions, 568 flow [2024-11-10 10:32:11,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 123 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:32:11,111 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 170 flow [2024-11-10 10:32:11,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-10 10:32:11,112 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-11-10 10:32:11,112 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 170 flow [2024-11-10 10:32:11,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:11,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:11,113 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:11,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:32:11,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:11,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:11,113 INFO L85 PathProgramCache]: Analyzing trace with hash 407653068, now seen corresponding path program 2 times [2024-11-10 10:32:11,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:11,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792939178] [2024-11-10 10:32:11,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:11,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:11,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792939178] [2024-11-10 10:32:11,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792939178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:11,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635339528] [2024-11-10 10:32:11,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:32:11,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:11,190 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 10:32:11,191 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 10:32:11,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:32:11,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:11,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:32:11,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:11,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:11,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635339528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:11,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-10 10:32:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340141419] [2024-11-10 10:32:11,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:11,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-10 10:32:11,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-10 10:32:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 10:32:11,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-10 10:32:11,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 170 flow. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 10:32:11,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:11,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-10 10:32:11,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:13,342 INFO L124 PetriNetUnfolderBase]: 23285/31732 cut-off events. [2024-11-10 10:32:13,342 INFO L125 PetriNetUnfolderBase]: For 10206/10206 co-relation queries the response was YES. [2024-11-10 10:32:13,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77033 conditions, 31732 events. 23285/31732 cut-off events. For 10206/10206 co-relation queries the response was YES. Maximal size of possible extension queue 1602. Compared 201900 event pairs, 2282 based on Foata normal form. 330/31870 useless extension candidates. Maximal degree in co-relation 77025. Up to 5452 conditions per place. [2024-11-10 10:32:13,473 INFO L140 encePairwiseOnDemand]: 44/52 looper letters, 268 selfloop transitions, 28 changer transitions 0/303 dead transitions. [2024-11-10 10:32:13,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 303 transitions, 1451 flow [2024-11-10 10:32:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-10 10:32:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-10 10:32:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 431 transitions. [2024-11-10 10:32:13,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.592032967032967 [2024-11-10 10:32:13,476 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 170 flow. Second operand 14 states and 431 transitions. [2024-11-10 10:32:13,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 303 transitions, 1451 flow [2024-11-10 10:32:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 303 transitions, 1451 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:32:13,492 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 333 flow [2024-11-10 10:32:13,492 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=333, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-11-10 10:32:13,493 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2024-11-10 10:32:13,493 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 333 flow [2024-11-10 10:32:13,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 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 10:32:13,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:13,494 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:13,509 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 10:32:13,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:13,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:13,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash -664026926, now seen corresponding path program 3 times [2024-11-10 10:32:13,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001942764] [2024-11-10 10:32:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:13,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:13,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:13,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:13,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001942764] [2024-11-10 10:32:13,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001942764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:13,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:13,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:32:13,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169605996] [2024-11-10 10:32:13,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:13,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:32:13,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:13,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:32:13,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:32:13,761 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-11-10 10:32:13,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 333 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:13,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:13,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-11-10 10:32:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:15,934 INFO L124 PetriNetUnfolderBase]: 26688/37961 cut-off events. [2024-11-10 10:32:15,935 INFO L125 PetriNetUnfolderBase]: For 46785/47247 co-relation queries the response was YES. [2024-11-10 10:32:16,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105425 conditions, 37961 events. 26688/37961 cut-off events. For 46785/47247 co-relation queries the response was YES. Maximal size of possible extension queue 1899. Compared 266082 event pairs, 8177 based on Foata normal form. 208/37599 useless extension candidates. Maximal degree in co-relation 105412. Up to 16384 conditions per place. [2024-11-10 10:32:16,138 INFO L140 encePairwiseOnDemand]: 45/52 looper letters, 166 selfloop transitions, 19 changer transitions 0/201 dead transitions. [2024-11-10 10:32:16,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 201 transitions, 1185 flow [2024-11-10 10:32:16,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:32:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:32:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-11-10 10:32:16,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6126373626373627 [2024-11-10 10:32:16,139 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 333 flow. Second operand 7 states and 223 transitions. [2024-11-10 10:32:16,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 201 transitions, 1185 flow [2024-11-10 10:32:16,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 201 transitions, 1120 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-10 10:32:16,778 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 448 flow [2024-11-10 10:32:16,778 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=448, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2024-11-10 10:32:16,779 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-10 10:32:16,779 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 448 flow [2024-11-10 10:32:16,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:16,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:16,781 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:16,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:32:16,781 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:16,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 422764532, now seen corresponding path program 4 times [2024-11-10 10:32:16,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:16,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979068575] [2024-11-10 10:32:16,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:16,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:16,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:16,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979068575] [2024-11-10 10:32:16,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979068575] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:32:16,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967628583] [2024-11-10 10:32:16,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:32:16,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:32:16,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:32:16,860 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 10:32:16,861 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 10:32:16,917 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:32:16,917 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:32:16,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:32:16,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:32:17,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:17,002 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:32:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967628583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:32:17,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:32:17,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-10 10:32:17,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726789215] [2024-11-10 10:32:17,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:32:17,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:32:17,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:32:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:32:17,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-10 10:32:17,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 448 flow. Second operand has 11 states, 11 states have (on average 16.09090909090909) internal successors, (177), 11 states have internal predecessors, (177), 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 10:32:17,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:17,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-10 10:32:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:21,555 INFO L124 PetriNetUnfolderBase]: 53392/71783 cut-off events. [2024-11-10 10:32:21,556 INFO L125 PetriNetUnfolderBase]: For 97611/97679 co-relation queries the response was YES. [2024-11-10 10:32:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209123 conditions, 71783 events. 53392/71783 cut-off events. For 97611/97679 co-relation queries the response was YES. Maximal size of possible extension queue 3375. Compared 476419 event pairs, 6272 based on Foata normal form. 702/72186 useless extension candidates. Maximal degree in co-relation 209104. Up to 12756 conditions per place. [2024-11-10 10:32:22,034 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 320 selfloop transitions, 73 changer transitions 0/400 dead transitions. [2024-11-10 10:32:22,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 400 transitions, 2293 flow [2024-11-10 10:32:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 10:32:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-10 10:32:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 523 transitions. [2024-11-10 10:32:22,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5916289592760181 [2024-11-10 10:32:22,038 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 448 flow. Second operand 17 states and 523 transitions. [2024-11-10 10:32:22,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 400 transitions, 2293 flow [2024-11-10 10:32:23,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 400 transitions, 2275 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-10 10:32:23,059 INFO L231 Difference]: Finished difference. Result has 106 places, 129 transitions, 1024 flow [2024-11-10 10:32:23,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1024, PETRI_PLACES=106, PETRI_TRANSITIONS=129} [2024-11-10 10:32:23,060 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-11-10 10:32:23,062 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 129 transitions, 1024 flow [2024-11-10 10:32:23,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.09090909090909) internal successors, (177), 11 states have internal predecessors, (177), 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 10:32:23,062 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:23,063 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:23,075 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 10:32:23,263 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,SelfDestructingSolverStorable5 [2024-11-10 10:32:23,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:23,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:23,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1148826918, now seen corresponding path program 5 times [2024-11-10 10:32:23,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:23,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867570100] [2024-11-10 10:32:23,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:23,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:23,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867570100] [2024-11-10 10:32:23,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867570100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:23,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:23,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:32:23,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925637283] [2024-11-10 10:32:23,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:23,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:32:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:32:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:32:23,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 52 [2024-11-10 10:32:23,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 129 transitions, 1024 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:23,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:23,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 52 [2024-11-10 10:32:23,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:28,333 INFO L124 PetriNetUnfolderBase]: 53769/72833 cut-off events. [2024-11-10 10:32:28,333 INFO L125 PetriNetUnfolderBase]: For 203492/204134 co-relation queries the response was YES. [2024-11-10 10:32:28,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247003 conditions, 72833 events. 53769/72833 cut-off events. For 203492/204134 co-relation queries the response was YES. Maximal size of possible extension queue 3449. Compared 495275 event pairs, 15533 based on Foata normal form. 584/72999 useless extension candidates. Maximal degree in co-relation 246973. Up to 34193 conditions per place. [2024-11-10 10:32:28,900 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 160 selfloop transitions, 46 changer transitions 0/213 dead transitions. [2024-11-10 10:32:28,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 213 transitions, 1844 flow [2024-11-10 10:32:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:32:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:32:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-11-10 10:32:28,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6192307692307693 [2024-11-10 10:32:28,901 INFO L175 Difference]: Start difference. First operand has 106 places, 129 transitions, 1024 flow. Second operand 5 states and 161 transitions. [2024-11-10 10:32:28,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 213 transitions, 1844 flow [2024-11-10 10:32:32,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 213 transitions, 1818 flow, removed 13 selfloop flow, removed 0 redundant places. [2024-11-10 10:32:32,505 INFO L231 Difference]: Finished difference. Result has 113 places, 141 transitions, 1294 flow [2024-11-10 10:32:32,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1294, PETRI_PLACES=113, PETRI_TRANSITIONS=141} [2024-11-10 10:32:32,506 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-11-10 10:32:32,506 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 141 transitions, 1294 flow [2024-11-10 10:32:32,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:32,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:32,506 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:32,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:32:32,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:32,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash -623912582, now seen corresponding path program 6 times [2024-11-10 10:32:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:32,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102529037] [2024-11-10 10:32:32,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102529037] [2024-11-10 10:32:32,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102529037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:32,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:32,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:32:32,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708765471] [2024-11-10 10:32:32,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:32,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:32:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:32:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:32:32,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 52 [2024-11-10 10:32:32,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 1294 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:32,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:32,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 52 [2024-11-10 10:32:32,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:32:36,955 INFO L124 PetriNetUnfolderBase]: 46452/64620 cut-off events. [2024-11-10 10:32:36,955 INFO L125 PetriNetUnfolderBase]: For 243475/243932 co-relation queries the response was YES. [2024-11-10 10:32:37,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233799 conditions, 64620 events. 46452/64620 cut-off events. For 243475/243932 co-relation queries the response was YES. Maximal size of possible extension queue 3109. Compared 458354 event pairs, 16957 based on Foata normal form. 234/63815 useless extension candidates. Maximal degree in co-relation 233765. Up to 39252 conditions per place. [2024-11-10 10:32:37,786 INFO L140 encePairwiseOnDemand]: 43/52 looper letters, 178 selfloop transitions, 36 changer transitions 0/236 dead transitions. [2024-11-10 10:32:37,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 236 transitions, 2111 flow [2024-11-10 10:32:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:32:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:32:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-11-10 10:32:37,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-11-10 10:32:37,788 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 1294 flow. Second operand 6 states and 198 transitions. [2024-11-10 10:32:37,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 236 transitions, 2111 flow [2024-11-10 10:32:41,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 236 transitions, 2063 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 10:32:41,372 INFO L231 Difference]: Finished difference. Result has 121 places, 143 transitions, 1404 flow [2024-11-10 10:32:41,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1212, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1404, PETRI_PLACES=121, PETRI_TRANSITIONS=143} [2024-11-10 10:32:41,374 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-11-10 10:32:41,375 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 143 transitions, 1404 flow [2024-11-10 10:32:41,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:32:41,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:32:41,375 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:32:41,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:32:41,376 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:32:41,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:32:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -344369980, now seen corresponding path program 1 times [2024-11-10 10:32:41,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:32:41,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221354021] [2024-11-10 10:32:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:32:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:32:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:32:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:32:41,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:32:41,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221354021] [2024-11-10 10:32:41,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221354021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:32:41,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:32:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:32:41,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182596696] [2024-11-10 10:32:41,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:32:41,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:32:41,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:32:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:32:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:32:41,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 52 [2024-11-10 10:32:41,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 143 transitions, 1404 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:32:41,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:32:41,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 52 [2024-11-10 10:32:41,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand