./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-word-symm.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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:25:41,310 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:25:41,385 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:25:41,391 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:25:41,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:25:41,423 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:25:41,424 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:25:41,424 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:25:41,425 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:25:41,426 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:25:41,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:25:41,427 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:25:41,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:25:41,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:25:41,430 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:25:41,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:25:41,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:25:41,431 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:25:41,432 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:25:41,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:25:41,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:25:41,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:25:41,437 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:25:41,437 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:25:41,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:25:41,438 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:25:41,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:25:41,438 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:25:41,439 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:25:41,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:25:41,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:25:41,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:25:41,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:41,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:25:41,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:25:41,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:25:41,441 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:25:41,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:25:41,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:25:41,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:25:41,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:25:41,445 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:25:41,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-11-16 19:25:41,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:25:41,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:25:41,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:25:41,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:25:41,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:25:41,800 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-16 19:25:43,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:25:43,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:25:43,447 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2024-11-16 19:25:43,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297481837/8d50e4d8782c4ab494d62343f4fb9518/FLAG8c935e18a [2024-11-16 19:25:43,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297481837/8d50e4d8782c4ab494d62343f4fb9518 [2024-11-16 19:25:43,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:25:43,476 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:25:43,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:43,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:25:43,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:25:43,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33346fc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43, skipping insertion in model container [2024-11-16 19:25:43,489 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:25:43,746 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/chl-word-symm.wvr.c[2874,2887] [2024-11-16 19:25:43,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:43,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:25:43,785 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/chl-word-symm.wvr.c[2874,2887] [2024-11-16 19:25:43,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:25:43,807 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:25:43,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43 WrapperNode [2024-11-16 19:25:43,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:25:43,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:43,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:25:43,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:25:43,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,851 INFO L138 Inliner]: procedures = 23, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 121 [2024-11-16 19:25:43,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:25:43,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:25:43,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:25:43,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:25:43,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,869 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,884 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 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]. [2024-11-16 19:25:43,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,897 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,899 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,901 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:25:43,905 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:25:43,905 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:25:43,906 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:25:43,907 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (1/1) ... [2024-11-16 19:25:43,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:25:43,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:43,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:25:43,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:25:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:25:43,984 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-16 19:25:43,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-16 19:25:43,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-16 19:25:43,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 19:25:43,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:25:43,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:25:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:25:43,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:25:43,989 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:25:44,092 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:25:44,094 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:25:44,420 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:25:44,420 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:25:44,708 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:25:44,709 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:25:44,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:44 BoogieIcfgContainer [2024-11-16 19:25:44,709 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:25:44,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:25:44,714 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:25:44,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:25:44,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:25:43" (1/3) ... [2024-11-16 19:25:44,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3b9b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:44, skipping insertion in model container [2024-11-16 19:25:44,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:25:43" (2/3) ... [2024-11-16 19:25:44,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3b9b6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:25:44, skipping insertion in model container [2024-11-16 19:25:44,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:25:44" (3/3) ... [2024-11-16 19:25:44,722 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-11-16 19:25:44,740 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:25:44,741 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 19:25:44,741 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:25:44,800 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:25:44,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 44 transitions, 102 flow [2024-11-16 19:25:44,870 INFO L124 PetriNetUnfolderBase]: 12/42 cut-off events. [2024-11-16 19:25:44,870 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:44,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 42 events. 12/42 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 57 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-16 19:25:44,873 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 44 transitions, 102 flow [2024-11-16 19:25:44,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 41 transitions, 94 flow [2024-11-16 19:25:44,885 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:25:44,891 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;@40619c11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:25:44,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 19:25:44,906 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:25:44,906 INFO L124 PetriNetUnfolderBase]: 12/40 cut-off events. [2024-11-16 19:25:44,906 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:25:44,907 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:44,907 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:25:44,908 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:44,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash -421615674, now seen corresponding path program 1 times [2024-11-16 19:25:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:44,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598630766] [2024-11-16 19:25:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:45,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:45,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598630766] [2024-11-16 19:25:45,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598630766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:45,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:45,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:25:45,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88603942] [2024-11-16 19:25:45,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:45,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:25:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:25:45,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:25:45,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:25:45,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:45,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:45,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:25:45,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:45,373 INFO L124 PetriNetUnfolderBase]: 206/350 cut-off events. [2024-11-16 19:25:45,373 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-16 19:25:45,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 350 events. 206/350 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1178 event pairs, 115 based on Foata normal form. 31/313 useless extension candidates. Maximal degree in co-relation 626. Up to 316 conditions per place. [2024-11-16 19:25:45,382 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2024-11-16 19:25:45,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 142 flow [2024-11-16 19:25:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:25:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:25:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-16 19:25:45,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-11-16 19:25:45,397 INFO L175 Difference]: Start difference. First operand has 36 places, 41 transitions, 94 flow. Second operand 2 states and 54 transitions. [2024-11-16 19:25:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 142 flow [2024-11-16 19:25:45,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:45,402 INFO L231 Difference]: Finished difference. Result has 33 places, 37 transitions, 78 flow [2024-11-16 19:25:45,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=37} [2024-11-16 19:25:45,408 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-16 19:25:45,409 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 37 transitions, 78 flow [2024-11-16 19:25:45,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:45,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:45,410 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] [2024-11-16 19:25:45,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:25:45,411 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:45,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1018746788, now seen corresponding path program 1 times [2024-11-16 19:25:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:45,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154488753] [2024-11-16 19:25:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:45,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154488753] [2024-11-16 19:25:45,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154488753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:45,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:45,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:45,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824244759] [2024-11-16 19:25:45,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:45,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:45,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:45,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:45,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:45,914 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:25:45,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 37 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:45,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:45,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:25:45,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:46,147 INFO L124 PetriNetUnfolderBase]: 255/450 cut-off events. [2024-11-16 19:25:46,148 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:25:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 450 events. 255/450 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1791 event pairs, 120 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 877. Up to 306 conditions per place. [2024-11-16 19:25:46,151 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 1 changer transitions 9/56 dead transitions. [2024-11-16 19:25:46,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 215 flow [2024-11-16 19:25:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:46,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-11-16 19:25:46,153 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5284090909090909 [2024-11-16 19:25:46,153 INFO L175 Difference]: Start difference. First operand has 33 places, 37 transitions, 78 flow. Second operand 4 states and 93 transitions. [2024-11-16 19:25:46,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 215 flow [2024-11-16 19:25:46,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:46,156 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 87 flow [2024-11-16 19:25:46,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=87, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2024-11-16 19:25:46,182 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2024-11-16 19:25:46,182 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 87 flow [2024-11-16 19:25:46,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:46,182 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] [2024-11-16 19:25:46,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:25:46,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:46,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:46,184 INFO L85 PathProgramCache]: Analyzing trace with hash 287964106, now seen corresponding path program 2 times [2024-11-16 19:25:46,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:46,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770887974] [2024-11-16 19:25:46,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:46,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770887974] [2024-11-16 19:25:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770887974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:46,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:46,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53596176] [2024-11-16 19:25:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:46,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:25:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:25:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:25:46,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:25:46,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:46,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:25:46,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:46,677 INFO L124 PetriNetUnfolderBase]: 281/511 cut-off events. [2024-11-16 19:25:46,677 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-11-16 19:25:46,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 511 events. 281/511 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2169 event pairs, 156 based on Foata normal form. 5/448 useless extension candidates. Maximal degree in co-relation 1045. Up to 379 conditions per place. [2024-11-16 19:25:46,682 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 37 selfloop transitions, 1 changer transitions 7/54 dead transitions. [2024-11-16 19:25:46,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 54 transitions, 220 flow [2024-11-16 19:25:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:25:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:25:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-16 19:25:46,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170454545454546 [2024-11-16 19:25:46,688 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 87 flow. Second operand 4 states and 91 transitions. [2024-11-16 19:25:46,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 54 transitions, 220 flow [2024-11-16 19:25:46,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 54 transitions, 214 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:46,693 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 93 flow [2024-11-16 19:25:46,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-16 19:25:46,694 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-11-16 19:25:46,694 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 93 flow [2024-11-16 19:25:46,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:46,695 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] [2024-11-16 19:25:46,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:25:46,696 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:46,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:46,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2062300160, now seen corresponding path program 1 times [2024-11-16 19:25:46,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:46,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200194167] [2024-11-16 19:25:46,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:46,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200194167] [2024-11-16 19:25:46,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200194167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:46,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:46,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:25:46,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758411073] [2024-11-16 19:25:46,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:46,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:25:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:25:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:25:46,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:25:46,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:46,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:25:46,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:46,853 INFO L124 PetriNetUnfolderBase]: 196/363 cut-off events. [2024-11-16 19:25:46,854 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-11-16 19:25:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 363 events. 196/363 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1346 event pairs, 63 based on Foata normal form. 17/345 useless extension candidates. Maximal degree in co-relation 746. Up to 259 conditions per place. [2024-11-16 19:25:46,857 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 31 selfloop transitions, 2 changer transitions 5/47 dead transitions. [2024-11-16 19:25:46,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 195 flow [2024-11-16 19:25:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:25:46,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:25:46,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-16 19:25:46,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-11-16 19:25:46,859 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 93 flow. Second operand 3 states and 73 transitions. [2024-11-16 19:25:46,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 195 flow [2024-11-16 19:25:46,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:46,862 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 96 flow [2024-11-16 19:25:46,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2024-11-16 19:25:46,863 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-11-16 19:25:46,887 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 96 flow [2024-11-16 19:25:46,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:46,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:46,888 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] [2024-11-16 19:25:46,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:25:46,889 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:46,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash -186520966, now seen corresponding path program 1 times [2024-11-16 19:25:46,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870263179] [2024-11-16 19:25:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870263179] [2024-11-16 19:25:47,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870263179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:47,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:47,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:25:47,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842121769] [2024-11-16 19:25:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:47,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:25:47,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:25:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:25:47,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:47,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 96 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:47,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:47,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:47,740 INFO L124 PetriNetUnfolderBase]: 540/953 cut-off events. [2024-11-16 19:25:47,740 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2024-11-16 19:25:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 953 events. 540/953 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4480 event pairs, 85 based on Foata normal form. 1/853 useless extension candidates. Maximal degree in co-relation 2049. Up to 277 conditions per place. [2024-11-16 19:25:47,745 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 102 selfloop transitions, 22 changer transitions 1/132 dead transitions. [2024-11-16 19:25:47,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 132 transitions, 603 flow [2024-11-16 19:25:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:25:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:25:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-11-16 19:25:47,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-11-16 19:25:47,748 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 96 flow. Second operand 12 states and 228 transitions. [2024-11-16 19:25:47,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 132 transitions, 603 flow [2024-11-16 19:25:47,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 132 transitions, 569 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:47,752 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 234 flow [2024-11-16 19:25:47,752 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=234, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2024-11-16 19:25:47,753 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2024-11-16 19:25:47,753 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 234 flow [2024-11-16 19:25:47,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,753 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:47,753 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] [2024-11-16 19:25:47,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:25:47,754 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:47,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1839541326, now seen corresponding path program 1 times [2024-11-16 19:25:47,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:47,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577428248] [2024-11-16 19:25:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:47,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:47,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:47,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577428248] [2024-11-16 19:25:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577428248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:47,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:47,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347681694] [2024-11-16 19:25:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:47,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:47,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:47,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:47,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:47,917 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:47,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 234 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:47,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:47,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,101 INFO L124 PetriNetUnfolderBase]: 426/830 cut-off events. [2024-11-16 19:25:48,101 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2024-11-16 19:25:48,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 830 events. 426/830 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4134 event pairs, 241 based on Foata normal form. 28/842 useless extension candidates. Maximal degree in co-relation 2152. Up to 332 conditions per place. [2024-11-16 19:25:48,107 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 73 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2024-11-16 19:25:48,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 88 transitions, 499 flow [2024-11-16 19:25:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-11-16 19:25:48,109 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-11-16 19:25:48,109 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 234 flow. Second operand 6 states and 116 transitions. [2024-11-16 19:25:48,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 88 transitions, 499 flow [2024-11-16 19:25:48,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 499 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:25:48,114 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 267 flow [2024-11-16 19:25:48,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-16 19:25:48,115 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-16 19:25:48,115 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 267 flow [2024-11-16 19:25:48,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,116 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] [2024-11-16 19:25:48,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:25:48,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -646107847, now seen corresponding path program 1 times [2024-11-16 19:25:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262591765] [2024-11-16 19:25:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262591765] [2024-11-16 19:25:48,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262591765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:48,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:25:48,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:25:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576846523] [2024-11-16 19:25:48,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:48,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:25:48,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:48,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:25:48,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:25:48,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:48,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 267 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:48,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:48,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:48,372 INFO L124 PetriNetUnfolderBase]: 333/681 cut-off events. [2024-11-16 19:25:48,372 INFO L125 PetriNetUnfolderBase]: For 674/674 co-relation queries the response was YES. [2024-11-16 19:25:48,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 681 events. 333/681 cut-off events. For 674/674 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3283 event pairs, 200 based on Foata normal form. 24/694 useless extension candidates. Maximal degree in co-relation 1901. Up to 319 conditions per place. [2024-11-16 19:25:48,379 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 59 selfloop transitions, 8 changer transitions 6/80 dead transitions. [2024-11-16 19:25:48,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 499 flow [2024-11-16 19:25:48,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:25:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:25:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-16 19:25:48,382 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-16 19:25:48,382 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 267 flow. Second operand 6 states and 111 transitions. [2024-11-16 19:25:48,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 499 flow [2024-11-16 19:25:48,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 492 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:25:48,389 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 264 flow [2024-11-16 19:25:48,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2024-11-16 19:25:48,391 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-11-16 19:25:48,391 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 264 flow [2024-11-16 19:25:48,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:48,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:48,392 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] [2024-11-16 19:25:48,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:25:48,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:48,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1413899600, now seen corresponding path program 1 times [2024-11-16 19:25:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088740197] [2024-11-16 19:25:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:48,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:48,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088740197] [2024-11-16 19:25:48,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088740197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:48,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359176915] [2024-11-16 19:25:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:48,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:48,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:48,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:25:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:48,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:25:48,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:49,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359176915] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:49,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:25:49,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:25:49,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501548815] [2024-11-16 19:25:49,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:49,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:49,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:25:49,836 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:49,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 264 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:49,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:49,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:49,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:50,401 INFO L124 PetriNetUnfolderBase]: 543/1023 cut-off events. [2024-11-16 19:25:50,404 INFO L125 PetriNetUnfolderBase]: For 1083/1091 co-relation queries the response was YES. [2024-11-16 19:25:50,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3015 conditions, 1023 events. 543/1023 cut-off events. For 1083/1091 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5114 event pairs, 99 based on Foata normal form. 9/1022 useless extension candidates. Maximal degree in co-relation 2996. Up to 315 conditions per place. [2024-11-16 19:25:50,413 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 110 selfloop transitions, 24 changer transitions 6/147 dead transitions. [2024-11-16 19:25:50,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 147 transitions, 908 flow [2024-11-16 19:25:50,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:25:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:25:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-11-16 19:25:50,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-11-16 19:25:50,416 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 264 flow. Second operand 12 states and 231 transitions. [2024-11-16 19:25:50,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 147 transitions, 908 flow [2024-11-16 19:25:50,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 147 transitions, 877 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-16 19:25:50,423 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 404 flow [2024-11-16 19:25:50,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=404, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-11-16 19:25:50,424 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-11-16 19:25:50,424 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 404 flow [2024-11-16 19:25:50,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:50,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:50,425 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] [2024-11-16 19:25:50,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:25:50,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,630 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:50,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:50,630 INFO L85 PathProgramCache]: Analyzing trace with hash -995110418, now seen corresponding path program 2 times [2024-11-16 19:25:50,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:50,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141281312] [2024-11-16 19:25:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:50,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:50,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141281312] [2024-11-16 19:25:50,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141281312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:50,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134957631] [2024-11-16 19:25:50,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:25:50,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:50,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:50,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:50,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:25:50,999 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:25:50,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:51,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:25:51,003 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:25:51,333 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134957631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:51,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:25:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705924888] [2024-11-16 19:25:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:51,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:25:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:25:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:25:51,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:51,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 404 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:51,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:51,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:51,671 INFO L124 PetriNetUnfolderBase]: 614/1131 cut-off events. [2024-11-16 19:25:51,671 INFO L125 PetriNetUnfolderBase]: For 2046/2070 co-relation queries the response was YES. [2024-11-16 19:25:51,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 1131 events. 614/1131 cut-off events. For 2046/2070 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5741 event pairs, 110 based on Foata normal form. 13/1131 useless extension candidates. Maximal degree in co-relation 3686. Up to 681 conditions per place. [2024-11-16 19:25:51,680 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 28 changer transitions 6/127 dead transitions. [2024-11-16 19:25:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 127 transitions, 910 flow [2024-11-16 19:25:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-11-16 19:25:51,681 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-11-16 19:25:51,682 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 404 flow. Second operand 10 states and 184 transitions. [2024-11-16 19:25:51,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 127 transitions, 910 flow [2024-11-16 19:25:51,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 127 transitions, 897 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-16 19:25:51,694 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 540 flow [2024-11-16 19:25:51,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=540, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-11-16 19:25:51,696 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2024-11-16 19:25:51,696 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 540 flow [2024-11-16 19:25:51,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:51,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:51,697 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] [2024-11-16 19:25:51,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:51,901 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,SelfDestructingSolverStorable8 [2024-11-16 19:25:51,902 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:51,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:51,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1049058186, now seen corresponding path program 3 times [2024-11-16 19:25:51,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:51,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382126993] [2024-11-16 19:25:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:51,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382126993] [2024-11-16 19:25:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382126993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:52,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128898277] [2024-11-16 19:25:52,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:25:52,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:52,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:52,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:52,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:25:52,261 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:25:52,261 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:52,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:25:52,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:25:52,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:52,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128898277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:52,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:52,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:25:52,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022550702] [2024-11-16 19:25:52,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:52,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:25:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:25:52,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:25:52,635 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:52,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 540 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:52,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:52,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:52,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:52,981 INFO L124 PetriNetUnfolderBase]: 609/1132 cut-off events. [2024-11-16 19:25:52,982 INFO L125 PetriNetUnfolderBase]: For 2777/2805 co-relation queries the response was YES. [2024-11-16 19:25:52,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 1132 events. 609/1132 cut-off events. For 2777/2805 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5795 event pairs, 100 based on Foata normal form. 21/1144 useless extension candidates. Maximal degree in co-relation 3945. Up to 676 conditions per place. [2024-11-16 19:25:52,992 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 89 selfloop transitions, 29 changer transitions 6/131 dead transitions. [2024-11-16 19:25:52,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 131 transitions, 1014 flow [2024-11-16 19:25:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:52,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-11-16 19:25:52,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-16 19:25:52,994 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 540 flow. Second operand 10 states and 186 transitions. [2024-11-16 19:25:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 131 transitions, 1014 flow [2024-11-16 19:25:53,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 969 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-16 19:25:53,006 INFO L231 Difference]: Finished difference. Result has 93 places, 79 transitions, 588 flow [2024-11-16 19:25:53,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=588, PETRI_PLACES=93, PETRI_TRANSITIONS=79} [2024-11-16 19:25:53,007 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2024-11-16 19:25:53,007 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 79 transitions, 588 flow [2024-11-16 19:25:53,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:53,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:53,008 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] [2024-11-16 19:25:53,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:25:53,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:53,209 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:53,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1689182258, now seen corresponding path program 4 times [2024-11-16 19:25:53,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:53,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758208162] [2024-11-16 19:25:53,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:53,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758208162] [2024-11-16 19:25:53,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758208162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:53,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006189306] [2024-11-16 19:25:53,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:25:53,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:53,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:53,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:25:53,587 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:25:53,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:53,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:25:53,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:53,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006189306] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:54,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:25:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:25:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910969379] [2024-11-16 19:25:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:54,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:25:54,751 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:54,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 79 transitions, 588 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:54,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:54,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:55,479 INFO L124 PetriNetUnfolderBase]: 624/1161 cut-off events. [2024-11-16 19:25:55,480 INFO L125 PetriNetUnfolderBase]: For 3279/3295 co-relation queries the response was YES. [2024-11-16 19:25:55,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4159 conditions, 1161 events. 624/1161 cut-off events. For 3279/3295 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5999 event pairs, 95 based on Foata normal form. 17/1169 useless extension candidates. Maximal degree in co-relation 4130. Up to 315 conditions per place. [2024-11-16 19:25:55,490 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 121 selfloop transitions, 33 changer transitions 6/167 dead transitions. [2024-11-16 19:25:55,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 167 transitions, 1274 flow [2024-11-16 19:25:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:25:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:25:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 254 transitions. [2024-11-16 19:25:55,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44405594405594406 [2024-11-16 19:25:55,492 INFO L175 Difference]: Start difference. First operand has 93 places, 79 transitions, 588 flow. Second operand 13 states and 254 transitions. [2024-11-16 19:25:55,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 167 transitions, 1274 flow [2024-11-16 19:25:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 167 transitions, 1208 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-16 19:25:55,505 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 604 flow [2024-11-16 19:25:55,506 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=604, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2024-11-16 19:25:55,506 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 63 predicate places. [2024-11-16 19:25:55,507 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 604 flow [2024-11-16 19:25:55,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:55,507 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:55,507 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] [2024-11-16 19:25:55,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:25:55,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,708 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:55,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1903197614, now seen corresponding path program 5 times [2024-11-16 19:25:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382529315] [2024-11-16 19:25:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382529315] [2024-11-16 19:25:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382529315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:55,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164606535] [2024-11-16 19:25:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:25:55,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:55,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:55,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:55,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 19:25:56,037 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:25:56,037 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:56,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:25:56,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:56,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:25:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164606535] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:25:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:25:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334754195] [2024-11-16 19:25:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:57,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:25:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:25:57,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:25:57,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:57,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 604 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:57,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:57,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:57,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:57,896 INFO L124 PetriNetUnfolderBase]: 678/1279 cut-off events. [2024-11-16 19:25:57,896 INFO L125 PetriNetUnfolderBase]: For 3694/3720 co-relation queries the response was YES. [2024-11-16 19:25:57,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 1279 events. 678/1279 cut-off events. For 3694/3720 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6837 event pairs, 103 based on Foata normal form. 15/1282 useless extension candidates. Maximal degree in co-relation 4500. Up to 315 conditions per place. [2024-11-16 19:25:57,905 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 125 selfloop transitions, 36 changer transitions 6/174 dead transitions. [2024-11-16 19:25:57,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 174 transitions, 1361 flow [2024-11-16 19:25:57,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:25:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:25:57,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-11-16 19:25:57,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45104895104895104 [2024-11-16 19:25:57,907 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 604 flow. Second operand 13 states and 258 transitions. [2024-11-16 19:25:57,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 174 transitions, 1361 flow [2024-11-16 19:25:57,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 174 transitions, 1302 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-11-16 19:25:57,930 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 701 flow [2024-11-16 19:25:57,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=701, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-11-16 19:25:57,931 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 69 predicate places. [2024-11-16 19:25:57,931 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 701 flow [2024-11-16 19:25:57,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:57,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:57,931 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] [2024-11-16 19:25:57,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 19:25:58,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 19:25:58,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:58,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash 990911858, now seen corresponding path program 6 times [2024-11-16 19:25:58,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:58,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430884199] [2024-11-16 19:25:58,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:58,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:58,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:58,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430884199] [2024-11-16 19:25:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430884199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641947961] [2024-11-16 19:25:58,389 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:25:58,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:58,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:58,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 19:25:58,468 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:25:58,468 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:25:58,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:25:58,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:25:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:25:58,763 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:25:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641947961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:25:58,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:25:58,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:25:58,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602572494] [2024-11-16 19:25:58,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:25:58,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:25:58,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:25:58,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:25:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:25:58,794 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:25:58,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:58,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:25:58,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:25:58,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:25:59,117 INFO L124 PetriNetUnfolderBase]: 669/1255 cut-off events. [2024-11-16 19:25:59,117 INFO L125 PetriNetUnfolderBase]: For 4299/4325 co-relation queries the response was YES. [2024-11-16 19:25:59,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 1255 events. 669/1255 cut-off events. For 4299/4325 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6634 event pairs, 124 based on Foata normal form. 11/1252 useless extension candidates. Maximal degree in co-relation 4627. Up to 735 conditions per place. [2024-11-16 19:25:59,128 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 31 changer transitions 6/130 dead transitions. [2024-11-16 19:25:59,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 1131 flow [2024-11-16 19:25:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:25:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:25:59,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-11-16 19:25:59,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4068181818181818 [2024-11-16 19:25:59,131 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 701 flow. Second operand 10 states and 179 transitions. [2024-11-16 19:25:59,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 1131 flow [2024-11-16 19:25:59,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 130 transitions, 1089 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-16 19:25:59,148 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 727 flow [2024-11-16 19:25:59,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=727, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2024-11-16 19:25:59,149 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 72 predicate places. [2024-11-16 19:25:59,149 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 727 flow [2024-11-16 19:25:59,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:25:59,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:25:59,150 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] [2024-11-16 19:25:59,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 19:25:59,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:59,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:25:59,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:25:59,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1239429187, now seen corresponding path program 1 times [2024-11-16 19:25:59,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:25:59,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46781215] [2024-11-16 19:25:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:25:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:25:59,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:25:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46781215] [2024-11-16 19:25:59,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46781215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:25:59,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274730560] [2024-11-16 19:25:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:25:59,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:25:59,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:25:59,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:25:59,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 19:25:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:25:59,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:25:59,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:00,016 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:00,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274730560] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:00,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:26:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872166865] [2024-11-16 19:26:00,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:00,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:26:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:26:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:26:00,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:00,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 727 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:00,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:00,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:01,316 INFO L124 PetriNetUnfolderBase]: 715/1381 cut-off events. [2024-11-16 19:26:01,316 INFO L125 PetriNetUnfolderBase]: For 4572/4592 co-relation queries the response was YES. [2024-11-16 19:26:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5164 conditions, 1381 events. 715/1381 cut-off events. For 4572/4592 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7755 event pairs, 143 based on Foata normal form. 9/1376 useless extension candidates. Maximal degree in co-relation 5130. Up to 738 conditions per place. [2024-11-16 19:26:01,324 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 105 selfloop transitions, 35 changer transitions 8/155 dead transitions. [2024-11-16 19:26:01,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 155 transitions, 1359 flow [2024-11-16 19:26:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:26:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:26:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-11-16 19:26:01,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3847402597402597 [2024-11-16 19:26:01,326 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 727 flow. Second operand 14 states and 237 transitions. [2024-11-16 19:26:01,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 155 transitions, 1359 flow [2024-11-16 19:26:01,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 155 transitions, 1287 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:01,339 INFO L231 Difference]: Finished difference. Result has 121 places, 94 transitions, 874 flow [2024-11-16 19:26:01,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=874, PETRI_PLACES=121, PETRI_TRANSITIONS=94} [2024-11-16 19:26:01,339 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 85 predicate places. [2024-11-16 19:26:01,339 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 94 transitions, 874 flow [2024-11-16 19:26:01,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:01,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:01,340 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] [2024-11-16 19:26:01,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 19:26:01,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:01,544 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:01,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:01,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1577210363, now seen corresponding path program 2 times [2024-11-16 19:26:01,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506519886] [2024-11-16 19:26:01,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:01,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:01,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506519886] [2024-11-16 19:26:01,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506519886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:01,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339988815] [2024-11-16 19:26:01,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:01,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:01,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:01,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:01,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 19:26:01,861 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:01,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:01,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:26:01,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:02,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339988815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:02,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:26:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468388225] [2024-11-16 19:26:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:02,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:02,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:02,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:26:02,156 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:02,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 94 transitions, 874 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:02,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:02,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:02,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:02,395 INFO L124 PetriNetUnfolderBase]: 701/1353 cut-off events. [2024-11-16 19:26:02,396 INFO L125 PetriNetUnfolderBase]: For 5075/5100 co-relation queries the response was YES. [2024-11-16 19:26:02,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5293 conditions, 1353 events. 701/1353 cut-off events. For 5075/5100 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7529 event pairs, 166 based on Foata normal form. 14/1354 useless extension candidates. Maximal degree in co-relation 5251. Up to 879 conditions per place. [2024-11-16 19:26:02,406 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 86 selfloop transitions, 28 changer transitions 10/131 dead transitions. [2024-11-16 19:26:02,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 131 transitions, 1326 flow [2024-11-16 19:26:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-11-16 19:26:02,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-11-16 19:26:02,408 INFO L175 Difference]: Start difference. First operand has 121 places, 94 transitions, 874 flow. Second operand 10 states and 168 transitions. [2024-11-16 19:26:02,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 131 transitions, 1326 flow [2024-11-16 19:26:02,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 131 transitions, 1244 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:02,427 INFO L231 Difference]: Finished difference. Result has 125 places, 96 transitions, 907 flow [2024-11-16 19:26:02,427 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=125, PETRI_TRANSITIONS=96} [2024-11-16 19:26:02,429 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 89 predicate places. [2024-11-16 19:26:02,429 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 96 transitions, 907 flow [2024-11-16 19:26:02,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:02,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:02,429 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] [2024-11-16 19:26:02,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:02,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 19:26:02,630 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:02,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:02,630 INFO L85 PathProgramCache]: Analyzing trace with hash -957300023, now seen corresponding path program 3 times [2024-11-16 19:26:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941305323] [2024-11-16 19:26:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:02,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:02,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:02,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941305323] [2024-11-16 19:26:02,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941305323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:02,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647022792] [2024-11-16 19:26:02,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:02,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:02,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:02,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:02,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 19:26:02,948 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:02,948 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:02,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:26:02,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:03,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:03,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647022792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:03,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:03,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:26:03,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946215959] [2024-11-16 19:26:03,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:03,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:03,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:03,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:26:03,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:03,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 96 transitions, 907 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:03,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:03,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:03,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:03,507 INFO L124 PetriNetUnfolderBase]: 682/1313 cut-off events. [2024-11-16 19:26:03,508 INFO L125 PetriNetUnfolderBase]: For 4827/4851 co-relation queries the response was YES. [2024-11-16 19:26:03,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5247 conditions, 1313 events. 682/1313 cut-off events. For 4827/4851 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7222 event pairs, 156 based on Foata normal form. 15/1318 useless extension candidates. Maximal degree in co-relation 5204. Up to 842 conditions per place. [2024-11-16 19:26:03,519 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 82 selfloop transitions, 26 changer transitions 15/130 dead transitions. [2024-11-16 19:26:03,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 1312 flow [2024-11-16 19:26:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-11-16 19:26:03,522 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3840909090909091 [2024-11-16 19:26:03,522 INFO L175 Difference]: Start difference. First operand has 125 places, 96 transitions, 907 flow. Second operand 10 states and 169 transitions. [2024-11-16 19:26:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 1312 flow [2024-11-16 19:26:03,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 130 transitions, 1238 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-16 19:26:03,538 INFO L231 Difference]: Finished difference. Result has 127 places, 93 transitions, 865 flow [2024-11-16 19:26:03,538 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=865, PETRI_PLACES=127, PETRI_TRANSITIONS=93} [2024-11-16 19:26:03,539 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2024-11-16 19:26:03,539 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 93 transitions, 865 flow [2024-11-16 19:26:03,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:03,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:03,540 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] [2024-11-16 19:26:03,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 19:26:03,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-16 19:26:03,740 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:03,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:03,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1543673599, now seen corresponding path program 4 times [2024-11-16 19:26:03,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:03,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747650722] [2024-11-16 19:26:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:03,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747650722] [2024-11-16 19:26:03,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747650722] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:03,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76169134] [2024-11-16 19:26:03,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:03,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:03,963 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:03,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 19:26:04,028 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:04,028 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:04,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:26:04,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:04,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76169134] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:04,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:04,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:26:04,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907384781] [2024-11-16 19:26:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:04,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:26:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:26:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:26:04,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 93 transitions, 865 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:04,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:04,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:05,171 INFO L124 PetriNetUnfolderBase]: 657/1253 cut-off events. [2024-11-16 19:26:05,171 INFO L125 PetriNetUnfolderBase]: For 4649/4671 co-relation queries the response was YES. [2024-11-16 19:26:05,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5008 conditions, 1253 events. 657/1253 cut-off events. For 4649/4671 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6722 event pairs, 137 based on Foata normal form. 13/1257 useless extension candidates. Maximal degree in co-relation 4966. Up to 738 conditions per place. [2024-11-16 19:26:05,182 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 80 selfloop transitions, 31 changer transitions 17/135 dead transitions. [2024-11-16 19:26:05,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1270 flow [2024-11-16 19:26:05,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:26:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:26:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-11-16 19:26:05,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36538461538461536 [2024-11-16 19:26:05,183 INFO L175 Difference]: Start difference. First operand has 127 places, 93 transitions, 865 flow. Second operand 13 states and 209 transitions. [2024-11-16 19:26:05,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1270 flow [2024-11-16 19:26:05,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 135 transitions, 1194 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-16 19:26:05,201 INFO L231 Difference]: Finished difference. Result has 127 places, 89 transitions, 816 flow [2024-11-16 19:26:05,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=816, PETRI_PLACES=127, PETRI_TRANSITIONS=89} [2024-11-16 19:26:05,202 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 91 predicate places. [2024-11-16 19:26:05,202 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 89 transitions, 816 flow [2024-11-16 19:26:05,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:05,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:05,202 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] [2024-11-16 19:26:05,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:05,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 19:26:05,403 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:05,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:05,403 INFO L85 PathProgramCache]: Analyzing trace with hash 180551099, now seen corresponding path program 5 times [2024-11-16 19:26:05,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:05,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15987740] [2024-11-16 19:26:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:05,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15987740] [2024-11-16 19:26:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15987740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926348592] [2024-11-16 19:26:05,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:05,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:05,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:05,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:05,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 19:26:05,679 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:05,679 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:05,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 19:26:05,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:05,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:06,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926348592] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:06,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:06,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 26 [2024-11-16 19:26:06,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768289941] [2024-11-16 19:26:06,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:06,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:26:06,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:26:06,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 19:26:06,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:06,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 89 transitions, 816 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:06,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:06,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:06,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:07,083 INFO L124 PetriNetUnfolderBase]: 638/1205 cut-off events. [2024-11-16 19:26:07,083 INFO L125 PetriNetUnfolderBase]: For 4493/4517 co-relation queries the response was YES. [2024-11-16 19:26:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4746 conditions, 1205 events. 638/1205 cut-off events. For 4493/4517 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6381 event pairs, 135 based on Foata normal form. 13/1207 useless extension candidates. Maximal degree in co-relation 4705. Up to 738 conditions per place. [2024-11-16 19:26:07,092 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 74 selfloop transitions, 29 changer transitions 16/126 dead transitions. [2024-11-16 19:26:07,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 1199 flow [2024-11-16 19:26:07,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 19:26:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-16 19:26:07,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-11-16 19:26:07,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3513986013986014 [2024-11-16 19:26:07,094 INFO L175 Difference]: Start difference. First operand has 127 places, 89 transitions, 816 flow. Second operand 13 states and 201 transitions. [2024-11-16 19:26:07,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 1199 flow [2024-11-16 19:26:07,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 126 transitions, 1111 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-11-16 19:26:07,109 INFO L231 Difference]: Finished difference. Result has 123 places, 85 transitions, 760 flow [2024-11-16 19:26:07,109 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=760, PETRI_PLACES=123, PETRI_TRANSITIONS=85} [2024-11-16 19:26:07,109 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2024-11-16 19:26:07,109 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 85 transitions, 760 flow [2024-11-16 19:26:07,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:07,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:07,110 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] [2024-11-16 19:26:07,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:07,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 19:26:07,311 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:07,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash -731734657, now seen corresponding path program 6 times [2024-11-16 19:26:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832688523] [2024-11-16 19:26:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832688523] [2024-11-16 19:26:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832688523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630743062] [2024-11-16 19:26:07,538 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:07,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:07,540 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:07,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 19:26:07,620 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:26:07,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:07,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-16 19:26:07,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:07,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:07,860 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:07,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630743062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:07,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:07,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2024-11-16 19:26:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662967799] [2024-11-16 19:26:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:07,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:07,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:07,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:07,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2024-11-16 19:26:07,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:07,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 85 transitions, 760 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:07,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:07,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:07,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:08,152 INFO L124 PetriNetUnfolderBase]: 613/1143 cut-off events. [2024-11-16 19:26:08,152 INFO L125 PetriNetUnfolderBase]: For 4053/4071 co-relation queries the response was YES. [2024-11-16 19:26:08,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 1143 events. 613/1143 cut-off events. For 4053/4071 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5848 event pairs, 137 based on Foata normal form. 9/1143 useless extension candidates. Maximal degree in co-relation 4442. Up to 738 conditions per place. [2024-11-16 19:26:08,162 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 60 selfloop transitions, 18 changer transitions 25/110 dead transitions. [2024-11-16 19:26:08,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1051 flow [2024-11-16 19:26:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-11-16 19:26:08,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-11-16 19:26:08,163 INFO L175 Difference]: Start difference. First operand has 123 places, 85 transitions, 760 flow. Second operand 10 states and 160 transitions. [2024-11-16 19:26:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1051 flow [2024-11-16 19:26:08,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 110 transitions, 986 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:08,180 INFO L231 Difference]: Finished difference. Result has 117 places, 74 transitions, 661 flow [2024-11-16 19:26:08,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=661, PETRI_PLACES=117, PETRI_TRANSITIONS=74} [2024-11-16 19:26:08,181 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 81 predicate places. [2024-11-16 19:26:08,181 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 74 transitions, 661 flow [2024-11-16 19:26:08,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,181 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] [2024-11-16 19:26:08,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:08,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:08,386 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:08,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1823014894, now seen corresponding path program 1 times [2024-11-16 19:26:08,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896312201] [2024-11-16 19:26:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:08,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896312201] [2024-11-16 19:26:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896312201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:08,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:08,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:26:08,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466993880] [2024-11-16 19:26:08,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:08,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:08,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:08,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:08,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:08,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 74 transitions, 661 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:08,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:08,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:08,595 INFO L124 PetriNetUnfolderBase]: 394/808 cut-off events. [2024-11-16 19:26:08,595 INFO L125 PetriNetUnfolderBase]: For 2781/2791 co-relation queries the response was YES. [2024-11-16 19:26:08,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 808 events. 394/808 cut-off events. For 2781/2791 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4256 event pairs, 209 based on Foata normal form. 36/837 useless extension candidates. Maximal degree in co-relation 3092. Up to 320 conditions per place. [2024-11-16 19:26:08,598 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 70 selfloop transitions, 10 changer transitions 6/93 dead transitions. [2024-11-16 19:26:08,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 897 flow [2024-11-16 19:26:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:26:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:26:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-11-16 19:26:08,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-11-16 19:26:08,600 INFO L175 Difference]: Start difference. First operand has 117 places, 74 transitions, 661 flow. Second operand 6 states and 113 transitions. [2024-11-16 19:26:08,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 897 flow [2024-11-16 19:26:08,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 706 flow, removed 37 selfloop flow, removed 22 redundant places. [2024-11-16 19:26:08,606 INFO L231 Difference]: Finished difference. Result has 85 places, 63 transitions, 406 flow [2024-11-16 19:26:08,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=406, PETRI_PLACES=85, PETRI_TRANSITIONS=63} [2024-11-16 19:26:08,606 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-11-16 19:26:08,606 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 63 transitions, 406 flow [2024-11-16 19:26:08,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,607 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] [2024-11-16 19:26:08,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 19:26:08,607 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:08,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -790289855, now seen corresponding path program 1 times [2024-11-16 19:26:08,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250189398] [2024-11-16 19:26:08,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 19:26:08,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:08,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250189398] [2024-11-16 19:26:08,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250189398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:08,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:26:08,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:26:08,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658493349] [2024-11-16 19:26:08,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:08,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:26:08,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:08,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:26:08,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:26:08,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:08,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 63 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:08,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:08,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:08,809 INFO L124 PetriNetUnfolderBase]: 246/507 cut-off events. [2024-11-16 19:26:08,809 INFO L125 PetriNetUnfolderBase]: For 878/882 co-relation queries the response was YES. [2024-11-16 19:26:08,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 507 events. 246/507 cut-off events. For 878/882 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2233 event pairs, 133 based on Foata normal form. 24/527 useless extension candidates. Maximal degree in co-relation 1664. Up to 320 conditions per place. [2024-11-16 19:26:08,812 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 34 selfloop transitions, 2 changer transitions 26/69 dead transitions. [2024-11-16 19:26:08,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 69 transitions, 521 flow [2024-11-16 19:26:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:26:08,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:26:08,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-11-16 19:26:08,813 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39015151515151514 [2024-11-16 19:26:08,813 INFO L175 Difference]: Start difference. First operand has 85 places, 63 transitions, 406 flow. Second operand 6 states and 103 transitions. [2024-11-16 19:26:08,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 69 transitions, 521 flow [2024-11-16 19:26:08,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 69 transitions, 492 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-11-16 19:26:08,817 INFO L231 Difference]: Finished difference. Result has 77 places, 43 transitions, 190 flow [2024-11-16 19:26:08,817 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=77, PETRI_TRANSITIONS=43} [2024-11-16 19:26:08,817 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-11-16 19:26:08,817 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 43 transitions, 190 flow [2024-11-16 19:26:08,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:08,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:08,818 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:08,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 19:26:08,818 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:08,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:08,818 INFO L85 PathProgramCache]: Analyzing trace with hash 39684659, now seen corresponding path program 1 times [2024-11-16 19:26:08,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:08,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068165336] [2024-11-16 19:26:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:08,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068165336] [2024-11-16 19:26:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068165336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371299493] [2024-11-16 19:26:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:08,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:08,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:08,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:08,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 19:26:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:09,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 19:26:09,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371299493] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:09,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:09,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2024-11-16 19:26:09,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821156840] [2024-11-16 19:26:09,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:09,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:26:09,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:09,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:26:09,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:09,233 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-16 19:26:09,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 43 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:09,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-16 19:26:09,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:09,322 INFO L124 PetriNetUnfolderBase]: 250/446 cut-off events. [2024-11-16 19:26:09,322 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2024-11-16 19:26:09,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1412 conditions, 446 events. 250/446 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1651 event pairs, 102 based on Foata normal form. 15/456 useless extension candidates. Maximal degree in co-relation 1392. Up to 271 conditions per place. [2024-11-16 19:26:09,324 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 41 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2024-11-16 19:26:09,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 353 flow [2024-11-16 19:26:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:26:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:26:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-11-16 19:26:09,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-11-16 19:26:09,325 INFO L175 Difference]: Start difference. First operand has 77 places, 43 transitions, 190 flow. Second operand 7 states and 99 transitions. [2024-11-16 19:26:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 353 flow [2024-11-16 19:26:09,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 311 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-11-16 19:26:09,326 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 203 flow [2024-11-16 19:26:09,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-11-16 19:26:09,327 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-16 19:26:09,327 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 203 flow [2024-11-16 19:26:09,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:09,327 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:09,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:09,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 19:26:09,528 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:09,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2098459171, now seen corresponding path program 1 times [2024-11-16 19:26:09,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:09,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807916633] [2024-11-16 19:26:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807916633] [2024-11-16 19:26:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807916633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283952960] [2024-11-16 19:26:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:09,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:09,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:09,675 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:09,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 19:26:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:09,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-16 19:26:09,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:09,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,835 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:09,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283952960] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:09,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:09,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 14 [2024-11-16 19:26:09,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030256992] [2024-11-16 19:26:09,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:09,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:26:09,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:09,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:26:09,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-16 19:26:09,907 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-11-16 19:26:09,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:09,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-11-16 19:26:09,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:09,991 INFO L124 PetriNetUnfolderBase]: 282/519 cut-off events. [2024-11-16 19:26:09,991 INFO L125 PetriNetUnfolderBase]: For 366/368 co-relation queries the response was YES. [2024-11-16 19:26:09,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 519 events. 282/519 cut-off events. For 366/368 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2000 event pairs, 123 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 1551. Up to 300 conditions per place. [2024-11-16 19:26:09,994 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 46 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-11-16 19:26:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 390 flow [2024-11-16 19:26:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:26:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:26:09,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-11-16 19:26:09,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3246753246753247 [2024-11-16 19:26:09,995 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 203 flow. Second operand 7 states and 100 transitions. [2024-11-16 19:26:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 390 flow [2024-11-16 19:26:09,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 385 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:09,996 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 239 flow [2024-11-16 19:26:09,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2024-11-16 19:26:09,997 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-11-16 19:26:09,997 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 239 flow [2024-11-16 19:26:09,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:09,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:09,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:10,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:10,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:10,198 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:10,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:10,198 INFO L85 PathProgramCache]: Analyzing trace with hash -113957372, now seen corresponding path program 1 times [2024-11-16 19:26:10,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878431019] [2024-11-16 19:26:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:10,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878431019] [2024-11-16 19:26:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878431019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349911623] [2024-11-16 19:26:11,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:11,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:11,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:11,231 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:11,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 19:26:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:11,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 19:26:11,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:11,740 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:11,740 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 83 treesize of output 52 [2024-11-16 19:26:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:11,820 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:12,320 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-16 19:26:12,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 87 treesize of output 63 [2024-11-16 19:26:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349911623] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-11-16 19:26:12,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299966848] [2024-11-16 19:26:12,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:12,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:12,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:12,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=946, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 19:26:12,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 239 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:13,399 INFO L124 PetriNetUnfolderBase]: 436/786 cut-off events. [2024-11-16 19:26:13,399 INFO L125 PetriNetUnfolderBase]: For 1021/1065 co-relation queries the response was YES. [2024-11-16 19:26:13,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 786 events. 436/786 cut-off events. For 1021/1065 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3438 event pairs, 55 based on Foata normal form. 5/786 useless extension candidates. Maximal degree in co-relation 2629. Up to 244 conditions per place. [2024-11-16 19:26:13,402 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 101 selfloop transitions, 28 changer transitions 10/148 dead transitions. [2024-11-16 19:26:13,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 148 transitions, 968 flow [2024-11-16 19:26:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:26:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:26:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 280 transitions. [2024-11-16 19:26:13,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-11-16 19:26:13,404 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 239 flow. Second operand 14 states and 280 transitions. [2024-11-16 19:26:13,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 148 transitions, 968 flow [2024-11-16 19:26:13,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 148 transitions, 961 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:13,409 INFO L231 Difference]: Finished difference. Result has 80 places, 67 transitions, 497 flow [2024-11-16 19:26:13,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=497, PETRI_PLACES=80, PETRI_TRANSITIONS=67} [2024-11-16 19:26:13,410 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 44 predicate places. [2024-11-16 19:26:13,410 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 497 flow [2024-11-16 19:26:13,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:13,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:13,410 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:13,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:13,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:13,615 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:13,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:13,615 INFO L85 PathProgramCache]: Analyzing trace with hash 709865274, now seen corresponding path program 2 times [2024-11-16 19:26:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130239573] [2024-11-16 19:26:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:14,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130239573] [2024-11-16 19:26:14,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130239573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294941764] [2024-11-16 19:26:14,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:14,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:14,668 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:14,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 19:26:14,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:14,748 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:14,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:14,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:14,876 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:14,876 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 83 treesize of output 52 [2024-11-16 19:26:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:14,998 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294941764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710524469] [2024-11-16 19:26:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:15,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:15,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:15,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 497 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:15,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:15,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:15,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:15,502 INFO L124 PetriNetUnfolderBase]: 525/937 cut-off events. [2024-11-16 19:26:15,502 INFO L125 PetriNetUnfolderBase]: For 3452/3505 co-relation queries the response was YES. [2024-11-16 19:26:15,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 937 events. 525/937 cut-off events. For 3452/3505 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4367 event pairs, 195 based on Foata normal form. 7/938 useless extension candidates. Maximal degree in co-relation 3981. Up to 578 conditions per place. [2024-11-16 19:26:15,507 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 75 selfloop transitions, 29 changer transitions 17/130 dead transitions. [2024-11-16 19:26:15,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 130 transitions, 1205 flow [2024-11-16 19:26:15,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-11-16 19:26:15,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4256198347107438 [2024-11-16 19:26:15,508 INFO L175 Difference]: Start difference. First operand has 80 places, 67 transitions, 497 flow. Second operand 11 states and 206 transitions. [2024-11-16 19:26:15,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 130 transitions, 1205 flow [2024-11-16 19:26:15,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 1161 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:15,519 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 832 flow [2024-11-16 19:26:15,519 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2024-11-16 19:26:15,519 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 56 predicate places. [2024-11-16 19:26:15,520 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 832 flow [2024-11-16 19:26:15,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:15,520 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:15,520 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:15,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-16 19:26:15,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-16 19:26:15,721 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:15,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:15,721 INFO L85 PathProgramCache]: Analyzing trace with hash -203340180, now seen corresponding path program 3 times [2024-11-16 19:26:15,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:15,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457448950] [2024-11-16 19:26:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:16,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457448950] [2024-11-16 19:26:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457448950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84122412] [2024-11-16 19:26:16,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:16,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:16,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:16,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:16,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 19:26:16,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:16,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:16,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:16,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:16,916 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:16,916 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 83 treesize of output 52 [2024-11-16 19:26:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:16,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84122412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177307568] [2024-11-16 19:26:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:16,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:16,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:16,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:17,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:17,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 832 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:17,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:17,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:17,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:17,459 INFO L124 PetriNetUnfolderBase]: 510/910 cut-off events. [2024-11-16 19:26:17,459 INFO L125 PetriNetUnfolderBase]: For 4221/4272 co-relation queries the response was YES. [2024-11-16 19:26:17,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 910 events. 510/910 cut-off events. For 4221/4272 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4221 event pairs, 130 based on Foata normal form. 5/909 useless extension candidates. Maximal degree in co-relation 4170. Up to 380 conditions per place. [2024-11-16 19:26:17,466 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 103 selfloop transitions, 26 changer transitions 18/156 dead transitions. [2024-11-16 19:26:17,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 156 transitions, 1518 flow [2024-11-16 19:26:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:26:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:26:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-11-16 19:26:17,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4412878787878788 [2024-11-16 19:26:17,468 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 832 flow. Second operand 12 states and 233 transitions. [2024-11-16 19:26:17,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 156 transitions, 1518 flow [2024-11-16 19:26:17,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 1401 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-11-16 19:26:17,484 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 782 flow [2024-11-16 19:26:17,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=782, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2024-11-16 19:26:17,485 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 64 predicate places. [2024-11-16 19:26:17,485 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 782 flow [2024-11-16 19:26:17,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:17,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:17,485 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:17,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-16 19:26:17,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-16 19:26:17,690 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:17,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:17,690 INFO L85 PathProgramCache]: Analyzing trace with hash 721537772, now seen corresponding path program 4 times [2024-11-16 19:26:17,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:17,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037506167] [2024-11-16 19:26:17,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:17,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:18,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:18,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037506167] [2024-11-16 19:26:18,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037506167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:18,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264163847] [2024-11-16 19:26:18,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:18,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:18,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:18,622 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:18,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 19:26:18,710 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:18,710 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:18,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:18,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:19,155 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:19,156 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 83 treesize of output 52 [2024-11-16 19:26:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:19,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:19,761 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-16 19:26:19,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 103 treesize of output 71 [2024-11-16 19:26:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:19,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264163847] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:19,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:19,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 15] total 36 [2024-11-16 19:26:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896268588] [2024-11-16 19:26:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:19,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:26:19,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:26:19,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 19:26:19,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-11-16 19:26:19,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 782 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:19,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:19,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-11-16 19:26:19,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:20,945 INFO L124 PetriNetUnfolderBase]: 610/1076 cut-off events. [2024-11-16 19:26:20,945 INFO L125 PetriNetUnfolderBase]: For 4674/4674 co-relation queries the response was YES. [2024-11-16 19:26:20,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4970 conditions, 1076 events. 610/1076 cut-off events. For 4674/4674 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5099 event pairs, 81 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 4939. Up to 484 conditions per place. [2024-11-16 19:26:20,952 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 102 selfloop transitions, 64 changer transitions 16/189 dead transitions. [2024-11-16 19:26:20,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 189 transitions, 1864 flow [2024-11-16 19:26:20,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 19:26:20,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-16 19:26:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 317 transitions. [2024-11-16 19:26:20,954 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3791866028708134 [2024-11-16 19:26:20,954 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 782 flow. Second operand 19 states and 317 transitions. [2024-11-16 19:26:20,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 189 transitions, 1864 flow [2024-11-16 19:26:20,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 189 transitions, 1746 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:20,971 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 1223 flow [2024-11-16 19:26:20,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1223, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-11-16 19:26:20,972 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 78 predicate places. [2024-11-16 19:26:20,972 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 1223 flow [2024-11-16 19:26:20,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:20,973 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:20,973 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:20,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:21,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 19:26:21,178 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:21,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1477874676, now seen corresponding path program 5 times [2024-11-16 19:26:21,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2294174] [2024-11-16 19:26:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:22,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2294174] [2024-11-16 19:26:22,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2294174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:22,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580790465] [2024-11-16 19:26:22,015 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:22,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:22,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:22,017 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:22,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 19:26:22,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:22,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:22,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 19:26:22,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:22,628 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 19:26:22,629 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 83 treesize of output 47 [2024-11-16 19:26:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:22,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:23,094 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-16 19:26:23,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 87 treesize of output 63 [2024-11-16 19:26:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580790465] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:23,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 15] total 35 [2024-11-16 19:26:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800407015] [2024-11-16 19:26:23,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:23,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:23,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:23,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 19:26:23,212 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:23,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 1223 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:23,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:23,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:23,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:23,993 INFO L124 PetriNetUnfolderBase]: 549/985 cut-off events. [2024-11-16 19:26:23,993 INFO L125 PetriNetUnfolderBase]: For 5044/5091 co-relation queries the response was YES. [2024-11-16 19:26:23,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4942 conditions, 985 events. 549/985 cut-off events. For 5044/5091 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4624 event pairs, 82 based on Foata normal form. 5/982 useless extension candidates. Maximal degree in co-relation 4904. Up to 526 conditions per place. [2024-11-16 19:26:24,000 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 102 selfloop transitions, 58 changer transitions 6/176 dead transitions. [2024-11-16 19:26:24,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 176 transitions, 1971 flow [2024-11-16 19:26:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:26:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:26:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 267 transitions. [2024-11-16 19:26:24,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2024-11-16 19:26:24,002 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 1223 flow. Second operand 14 states and 267 transitions. [2024-11-16 19:26:24,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 176 transitions, 1971 flow [2024-11-16 19:26:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 176 transitions, 1885 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:24,023 INFO L231 Difference]: Finished difference. Result has 126 places, 121 transitions, 1459 flow [2024-11-16 19:26:24,024 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1459, PETRI_PLACES=126, PETRI_TRANSITIONS=121} [2024-11-16 19:26:24,024 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2024-11-16 19:26:24,024 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 1459 flow [2024-11-16 19:26:24,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:24,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:24,025 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:24,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-16 19:26:24,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:24,226 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:24,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:24,226 INFO L85 PathProgramCache]: Analyzing trace with hash 830400610, now seen corresponding path program 6 times [2024-11-16 19:26:24,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:24,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75570060] [2024-11-16 19:26:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:24,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75570060] [2024-11-16 19:26:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75570060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20241488] [2024-11-16 19:26:25,040 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:25,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:25,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:25,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:25,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 19:26:25,117 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:26:25,117 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:25,118 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:25,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:25,293 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:25,294 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 83 treesize of output 52 [2024-11-16 19:26:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:25,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:25,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20241488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:25,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:25,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032133829] [2024-11-16 19:26:25,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:25,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:25,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:25,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 1459 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:25,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:25,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:25,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:25,702 INFO L124 PetriNetUnfolderBase]: 565/1020 cut-off events. [2024-11-16 19:26:25,702 INFO L125 PetriNetUnfolderBase]: For 5642/5687 co-relation queries the response was YES. [2024-11-16 19:26:25,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 1020 events. 565/1020 cut-off events. For 5642/5687 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4940 event pairs, 193 based on Foata normal form. 6/1018 useless extension candidates. Maximal degree in co-relation 5264. Up to 622 conditions per place. [2024-11-16 19:26:25,709 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 94 selfloop transitions, 47 changer transitions 13/164 dead transitions. [2024-11-16 19:26:25,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 164 transitions, 2007 flow [2024-11-16 19:26:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:25,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-11-16 19:26:25,710 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42768595041322316 [2024-11-16 19:26:25,710 INFO L175 Difference]: Start difference. First operand has 126 places, 121 transitions, 1459 flow. Second operand 11 states and 207 transitions. [2024-11-16 19:26:25,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 164 transitions, 2007 flow [2024-11-16 19:26:25,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 164 transitions, 1903 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:25,726 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 1484 flow [2024-11-16 19:26:25,727 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1484, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2024-11-16 19:26:25,727 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 96 predicate places. [2024-11-16 19:26:25,727 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 1484 flow [2024-11-16 19:26:25,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:25,728 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:25,728 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:25,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-16 19:26:25,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-16 19:26:25,928 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1735861362, now seen corresponding path program 7 times [2024-11-16 19:26:25,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:25,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069328448] [2024-11-16 19:26:25,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:25,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:25,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:26,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069328448] [2024-11-16 19:26:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069328448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896189611] [2024-11-16 19:26:26,803 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:26,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:26,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:26,806 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:26,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 19:26:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:26,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:26,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:27,233 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:27,233 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 83 treesize of output 52 [2024-11-16 19:26:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:27,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:27,880 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-16 19:26:27,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 87 treesize of output 63 [2024-11-16 19:26:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:27,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896189611] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:27,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:27,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [15, 14] total 36 [2024-11-16 19:26:27,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483161160] [2024-11-16 19:26:27,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:27,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:27,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 19:26:27,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:27,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 1484 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:27,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:27,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:27,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:28,812 INFO L124 PetriNetUnfolderBase]: 538/966 cut-off events. [2024-11-16 19:26:28,812 INFO L125 PetriNetUnfolderBase]: For 5566/5611 co-relation queries the response was YES. [2024-11-16 19:26:28,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5109 conditions, 966 events. 538/966 cut-off events. For 5566/5611 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4583 event pairs, 70 based on Foata normal form. 5/963 useless extension candidates. Maximal degree in co-relation 5064. Up to 486 conditions per place. [2024-11-16 19:26:28,818 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 98 selfloop transitions, 58 changer transitions 11/177 dead transitions. [2024-11-16 19:26:28,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 177 transitions, 2079 flow [2024-11-16 19:26:28,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:26:28,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:26:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 269 transitions. [2024-11-16 19:26:28,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4366883116883117 [2024-11-16 19:26:28,820 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 1484 flow. Second operand 14 states and 269 transitions. [2024-11-16 19:26:28,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 177 transitions, 2079 flow [2024-11-16 19:26:28,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 177 transitions, 2030 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-11-16 19:26:28,841 INFO L231 Difference]: Finished difference. Result has 136 places, 118 transitions, 1507 flow [2024-11-16 19:26:28,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1507, PETRI_PLACES=136, PETRI_TRANSITIONS=118} [2024-11-16 19:26:28,842 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 100 predicate places. [2024-11-16 19:26:28,842 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 118 transitions, 1507 flow [2024-11-16 19:26:28,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:28,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:28,842 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:28,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:29,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:29,043 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:29,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1674183008, now seen corresponding path program 8 times [2024-11-16 19:26:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392894918] [2024-11-16 19:26:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:29,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392894918] [2024-11-16 19:26:29,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392894918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:29,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989002986] [2024-11-16 19:26:29,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:29,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:29,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:29,729 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:29,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 19:26:29,818 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:29,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:29,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:29,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:29,961 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:29,961 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 83 treesize of output 52 [2024-11-16 19:26:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:30,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989002986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:30,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434717072] [2024-11-16 19:26:30,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:30,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:30,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:30,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:30,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:30,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 118 transitions, 1507 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:30,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:30,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:30,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:30,393 INFO L124 PetriNetUnfolderBase]: 531/959 cut-off events. [2024-11-16 19:26:30,393 INFO L125 PetriNetUnfolderBase]: For 5623/5668 co-relation queries the response was YES. [2024-11-16 19:26:30,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5094 conditions, 959 events. 531/959 cut-off events. For 5623/5668 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4583 event pairs, 202 based on Foata normal form. 5/956 useless extension candidates. Maximal degree in co-relation 5053. Up to 635 conditions per place. [2024-11-16 19:26:30,401 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 91 selfloop transitions, 36 changer transitions 12/149 dead transitions. [2024-11-16 19:26:30,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 1915 flow [2024-11-16 19:26:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 19:26:30,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 19:26:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-11-16 19:26:30,403 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-11-16 19:26:30,403 INFO L175 Difference]: Start difference. First operand has 136 places, 118 transitions, 1507 flow. Second operand 9 states and 173 transitions. [2024-11-16 19:26:30,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 1915 flow [2024-11-16 19:26:30,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1788 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:30,423 INFO L231 Difference]: Finished difference. Result has 128 places, 113 transitions, 1372 flow [2024-11-16 19:26:30,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1372, PETRI_PLACES=128, PETRI_TRANSITIONS=113} [2024-11-16 19:26:30,424 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 92 predicate places. [2024-11-16 19:26:30,424 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 113 transitions, 1372 flow [2024-11-16 19:26:30,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:30,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:30,424 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:30,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-16 19:26:30,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:30,629 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:30,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2087704326, now seen corresponding path program 9 times [2024-11-16 19:26:30,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:30,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929354715] [2024-11-16 19:26:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929354715] [2024-11-16 19:26:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929354715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:31,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640707312] [2024-11-16 19:26:31,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:31,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:31,336 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:31,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 19:26:31,412 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:31,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:31,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:31,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:31,537 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:31,538 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 83 treesize of output 52 [2024-11-16 19:26:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:31,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:31,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640707312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:31,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:31,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:31,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446671085] [2024-11-16 19:26:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:31,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:31,661 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 113 transitions, 1372 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:31,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:31,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:31,941 INFO L124 PetriNetUnfolderBase]: 542/976 cut-off events. [2024-11-16 19:26:31,941 INFO L125 PetriNetUnfolderBase]: For 5502/5547 co-relation queries the response was YES. [2024-11-16 19:26:31,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5139 conditions, 976 events. 542/976 cut-off events. For 5502/5547 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4669 event pairs, 206 based on Foata normal form. 1/969 useless extension candidates. Maximal degree in co-relation 5098. Up to 641 conditions per place. [2024-11-16 19:26:31,949 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 76 selfloop transitions, 45 changer transitions 14/145 dead transitions. [2024-11-16 19:26:31,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 145 transitions, 1874 flow [2024-11-16 19:26:31,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-11-16 19:26:31,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-16 19:26:31,951 INFO L175 Difference]: Start difference. First operand has 128 places, 113 transitions, 1372 flow. Second operand 10 states and 187 transitions. [2024-11-16 19:26:31,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 145 transitions, 1874 flow [2024-11-16 19:26:31,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 145 transitions, 1769 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-11-16 19:26:31,970 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 1421 flow [2024-11-16 19:26:31,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1281, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1421, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2024-11-16 19:26:31,971 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2024-11-16 19:26:31,971 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 1421 flow [2024-11-16 19:26:31,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:31,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:31,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:31,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:32,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:32,172 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:32,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1985404250, now seen corresponding path program 10 times [2024-11-16 19:26:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824382503] [2024-11-16 19:26:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:32,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:32,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824382503] [2024-11-16 19:26:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824382503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078250114] [2024-11-16 19:26:32,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:32,833 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:32,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 19:26:32,918 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:32,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:32,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:32,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:33,339 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:33,339 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 83 treesize of output 52 [2024-11-16 19:26:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:33,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:33,801 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-16 19:26:33,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 122 treesize of output 90 [2024-11-16 19:26:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:33,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078250114] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:33,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:33,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 15] total 36 [2024-11-16 19:26:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289405139] [2024-11-16 19:26:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:33,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 19:26:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:33,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 19:26:33,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 19:26:33,939 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-16 19:26:33,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 1421 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:33,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:33,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-16 19:26:33,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:34,919 INFO L124 PetriNetUnfolderBase]: 628/1113 cut-off events. [2024-11-16 19:26:34,920 INFO L125 PetriNetUnfolderBase]: For 6208/6219 co-relation queries the response was YES. [2024-11-16 19:26:34,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 1113 events. 628/1113 cut-off events. For 6208/6219 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5344 event pairs, 71 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 5774. Up to 557 conditions per place. [2024-11-16 19:26:34,927 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 92 selfloop transitions, 87 changer transitions 6/194 dead transitions. [2024-11-16 19:26:34,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 194 transitions, 2346 flow [2024-11-16 19:26:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 19:26:34,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-16 19:26:34,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 325 transitions. [2024-11-16 19:26:34,928 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.388755980861244 [2024-11-16 19:26:34,928 INFO L175 Difference]: Start difference. First operand has 126 places, 116 transitions, 1421 flow. Second operand 19 states and 325 transitions. [2024-11-16 19:26:34,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 194 transitions, 2346 flow [2024-11-16 19:26:34,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 194 transitions, 2269 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:34,943 INFO L231 Difference]: Finished difference. Result has 143 places, 138 transitions, 1847 flow [2024-11-16 19:26:34,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1847, PETRI_PLACES=143, PETRI_TRANSITIONS=138} [2024-11-16 19:26:34,944 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 107 predicate places. [2024-11-16 19:26:34,944 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 138 transitions, 1847 flow [2024-11-16 19:26:34,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:34,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:34,944 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:34,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-16 19:26:35,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:35,145 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:35,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1060360844, now seen corresponding path program 11 times [2024-11-16 19:26:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:35,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295909433] [2024-11-16 19:26:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:35,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:35,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295909433] [2024-11-16 19:26:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295909433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177828356] [2024-11-16 19:26:35,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:35,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:35,848 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:35,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 19:26:35,940 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:35,941 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:35,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-16 19:26:35,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:36,487 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-16 19:26:36,488 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 83 treesize of output 47 [2024-11-16 19:26:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:36,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:36,914 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-16 19:26:36,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 122 treesize of output 90 [2024-11-16 19:26:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177828356] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:36,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:36,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 15] total 35 [2024-11-16 19:26:36,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020760886] [2024-11-16 19:26:36,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:36,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:36,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:36,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:36,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 19:26:37,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:37,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 138 transitions, 1847 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:37,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:37,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:37,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:37,883 INFO L124 PetriNetUnfolderBase]: 600/1075 cut-off events. [2024-11-16 19:26:37,883 INFO L125 PetriNetUnfolderBase]: For 7086/7119 co-relation queries the response was YES. [2024-11-16 19:26:37,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6046 conditions, 1075 events. 600/1075 cut-off events. For 7086/7119 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5211 event pairs, 74 based on Foata normal form. 3/1064 useless extension candidates. Maximal degree in co-relation 6000. Up to 566 conditions per place. [2024-11-16 19:26:37,889 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 87 selfloop transitions, 75 changer transitions 9/184 dead transitions. [2024-11-16 19:26:37,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 184 transitions, 2422 flow [2024-11-16 19:26:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:26:37,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:26:37,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 274 transitions. [2024-11-16 19:26:37,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-11-16 19:26:37,891 INFO L175 Difference]: Start difference. First operand has 143 places, 138 transitions, 1847 flow. Second operand 15 states and 274 transitions. [2024-11-16 19:26:37,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 184 transitions, 2422 flow [2024-11-16 19:26:37,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 184 transitions, 2383 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:37,910 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1968 flow [2024-11-16 19:26:37,910 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1968, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2024-11-16 19:26:37,910 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 119 predicate places. [2024-11-16 19:26:37,910 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1968 flow [2024-11-16 19:26:37,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:37,911 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:37,911 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:37,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:38,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-16 19:26:38,112 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:38,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -786344416, now seen corresponding path program 12 times [2024-11-16 19:26:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114006649] [2024-11-16 19:26:38,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114006649] [2024-11-16 19:26:38,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114006649] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:38,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450022202] [2024-11-16 19:26:38,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:38,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:38,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:38,741 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:38,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 19:26:38,852 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:26:38,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:38,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:38,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:38,973 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:38,973 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 83 treesize of output 52 [2024-11-16 19:26:39,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:39,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:39,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450022202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:39,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:39,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:39,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981801864] [2024-11-16 19:26:39,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:39,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:39,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:39,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:39,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:39,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:39,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 1968 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:39,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:39,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:39,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:39,370 INFO L124 PetriNetUnfolderBase]: 592/1069 cut-off events. [2024-11-16 19:26:39,370 INFO L125 PetriNetUnfolderBase]: For 7803/7834 co-relation queries the response was YES. [2024-11-16 19:26:39,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 1069 events. 592/1069 cut-off events. For 7803/7834 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5231 event pairs, 212 based on Foata normal form. 3/1058 useless extension candidates. Maximal degree in co-relation 6128. Up to 694 conditions per place. [2024-11-16 19:26:39,376 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 88 selfloop transitions, 48 changer transitions 13/162 dead transitions. [2024-11-16 19:26:39,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 162 transitions, 2353 flow [2024-11-16 19:26:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:39,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-11-16 19:26:39,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40702479338842973 [2024-11-16 19:26:39,377 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1968 flow. Second operand 11 states and 197 transitions. [2024-11-16 19:26:39,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 162 transitions, 2353 flow [2024-11-16 19:26:39,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 162 transitions, 2163 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-11-16 19:26:39,395 INFO L231 Difference]: Finished difference. Result has 151 places, 133 transitions, 1788 flow [2024-11-16 19:26:39,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1788, PETRI_PLACES=151, PETRI_TRANSITIONS=133} [2024-11-16 19:26:39,395 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 115 predicate places. [2024-11-16 19:26:39,395 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 133 transitions, 1788 flow [2024-11-16 19:26:39,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:39,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:39,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:39,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:39,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-16 19:26:39,596 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:39,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash 453669238, now seen corresponding path program 13 times [2024-11-16 19:26:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:39,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904467139] [2024-11-16 19:26:39,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904467139] [2024-11-16 19:26:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904467139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147170349] [2024-11-16 19:26:40,297 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:40,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:40,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:40,298 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:40,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-16 19:26:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:40,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:40,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:40,631 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:40,631 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 83 treesize of output 52 [2024-11-16 19:26:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:40,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:41,136 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-16 19:26:41,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 103 treesize of output 71 [2024-11-16 19:26:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147170349] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:41,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:41,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 14] total 34 [2024-11-16 19:26:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236947052] [2024-11-16 19:26:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:41,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:41,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 19:26:41,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:41,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 133 transitions, 1788 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:41,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:41,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:41,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:42,221 INFO L124 PetriNetUnfolderBase]: 716/1287 cut-off events. [2024-11-16 19:26:42,222 INFO L125 PetriNetUnfolderBase]: For 9265/9295 co-relation queries the response was YES. [2024-11-16 19:26:42,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7244 conditions, 1287 events. 716/1287 cut-off events. For 9265/9295 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 6505 event pairs, 83 based on Foata normal form. 3/1282 useless extension candidates. Maximal degree in co-relation 7196. Up to 584 conditions per place. [2024-11-16 19:26:42,233 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 123 selfloop transitions, 82 changer transitions 10/228 dead transitions. [2024-11-16 19:26:42,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 228 transitions, 2993 flow [2024-11-16 19:26:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 19:26:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-16 19:26:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 312 transitions. [2024-11-16 19:26:42,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41711229946524064 [2024-11-16 19:26:42,236 INFO L175 Difference]: Start difference. First operand has 151 places, 133 transitions, 1788 flow. Second operand 17 states and 312 transitions. [2024-11-16 19:26:42,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 228 transitions, 2993 flow [2024-11-16 19:26:42,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 228 transitions, 2867 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-11-16 19:26:42,276 INFO L231 Difference]: Finished difference. Result has 163 places, 167 transitions, 2453 flow [2024-11-16 19:26:42,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2453, PETRI_PLACES=163, PETRI_TRANSITIONS=167} [2024-11-16 19:26:42,277 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 127 predicate places. [2024-11-16 19:26:42,277 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 167 transitions, 2453 flow [2024-11-16 19:26:42,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:42,277 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:42,277 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:42,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-16 19:26:42,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-16 19:26:42,478 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:42,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:42,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1625287510, now seen corresponding path program 14 times [2024-11-16 19:26:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368187891] [2024-11-16 19:26:42,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:42,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:43,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368187891] [2024-11-16 19:26:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368187891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684077083] [2024-11-16 19:26:43,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:26:43,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:43,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:43,140 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:43,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-16 19:26:43,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 19:26:43,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:43,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:43,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:43,364 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:43,364 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 83 treesize of output 52 [2024-11-16 19:26:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:43,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684077083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:43,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:43,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298541843] [2024-11-16 19:26:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:43,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:43,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:43,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 167 transitions, 2453 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:43,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:43,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:43,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:43,777 INFO L124 PetriNetUnfolderBase]: 734/1317 cut-off events. [2024-11-16 19:26:43,777 INFO L125 PetriNetUnfolderBase]: For 11100/11134 co-relation queries the response was YES. [2024-11-16 19:26:43,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7922 conditions, 1317 events. 734/1317 cut-off events. For 11100/11134 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6708 event pairs, 252 based on Foata normal form. 7/1316 useless extension candidates. Maximal degree in co-relation 7866. Up to 813 conditions per place. [2024-11-16 19:26:43,786 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 123 selfloop transitions, 51 changer transitions 15/202 dead transitions. [2024-11-16 19:26:43,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 202 transitions, 3117 flow [2024-11-16 19:26:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:26:43,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:26:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-11-16 19:26:43,787 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-11-16 19:26:43,788 INFO L175 Difference]: Start difference. First operand has 163 places, 167 transitions, 2453 flow. Second operand 10 states and 185 transitions. [2024-11-16 19:26:43,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 202 transitions, 3117 flow [2024-11-16 19:26:43,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 202 transitions, 2961 flow, removed 78 selfloop flow, removed 1 redundant places. [2024-11-16 19:26:43,824 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 2480 flow [2024-11-16 19:26:43,824 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2480, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-11-16 19:26:43,824 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 135 predicate places. [2024-11-16 19:26:43,824 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 2480 flow [2024-11-16 19:26:43,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:43,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:43,825 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:43,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:44,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:44,025 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:44,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:44,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1130363264, now seen corresponding path program 15 times [2024-11-16 19:26:44,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:44,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694489824] [2024-11-16 19:26:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:44,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:44,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694489824] [2024-11-16 19:26:44,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694489824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:44,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116780225] [2024-11-16 19:26:44,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:26:44,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:44,726 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:44,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-16 19:26:44,819 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-16 19:26:44,819 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:44,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:44,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:45,003 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:45,004 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 83 treesize of output 52 [2024-11-16 19:26:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:45,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:45,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116780225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:45,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225567117] [2024-11-16 19:26:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:45,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:45,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:45,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:45,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 170 transitions, 2480 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:45,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:45,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:45,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:45,533 INFO L124 PetriNetUnfolderBase]: 748/1349 cut-off events. [2024-11-16 19:26:45,534 INFO L125 PetriNetUnfolderBase]: For 11061/11095 co-relation queries the response was YES. [2024-11-16 19:26:45,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8022 conditions, 1349 events. 748/1349 cut-off events. For 11061/11095 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6974 event pairs, 243 based on Foata normal form. 7/1348 useless extension candidates. Maximal degree in co-relation 7964. Up to 816 conditions per place. [2024-11-16 19:26:45,542 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 129 selfloop transitions, 59 changer transitions 10/211 dead transitions. [2024-11-16 19:26:45,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 211 transitions, 3193 flow [2024-11-16 19:26:45,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:26:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:26:45,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-16 19:26:45,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-11-16 19:26:45,544 INFO L175 Difference]: Start difference. First operand has 171 places, 170 transitions, 2480 flow. Second operand 12 states and 213 transitions. [2024-11-16 19:26:45,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 211 transitions, 3193 flow [2024-11-16 19:26:45,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 211 transitions, 3089 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-16 19:26:45,583 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 2674 flow [2024-11-16 19:26:45,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2388, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2674, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-11-16 19:26:45,583 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 145 predicate places. [2024-11-16 19:26:45,584 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 2674 flow [2024-11-16 19:26:45,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:45,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:45,584 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:45,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-16 19:26:45,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-16 19:26:45,785 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:45,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash 964264446, now seen corresponding path program 16 times [2024-11-16 19:26:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920091458] [2024-11-16 19:26:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:45,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920091458] [2024-11-16 19:26:46,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920091458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405705680] [2024-11-16 19:26:46,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 19:26:46,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:46,522 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:46,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-16 19:26:46,616 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 19:26:46,616 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:46,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:46,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:46,973 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:46,974 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 83 treesize of output 52 [2024-11-16 19:26:47,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:47,063 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:47,459 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-11-16 19:26:47,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 87 treesize of output 63 [2024-11-16 19:26:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:47,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405705680] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:47,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:47,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 14] total 34 [2024-11-16 19:26:47,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139682360] [2024-11-16 19:26:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:47,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:47,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 19:26:47,549 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-11-16 19:26:47,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 2674 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:47,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:47,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-11-16 19:26:47,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:48,473 INFO L124 PetriNetUnfolderBase]: 816/1458 cut-off events. [2024-11-16 19:26:48,473 INFO L125 PetriNetUnfolderBase]: For 11989/12003 co-relation queries the response was YES. [2024-11-16 19:26:48,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8727 conditions, 1458 events. 816/1458 cut-off events. For 11989/12003 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7530 event pairs, 86 based on Foata normal form. 5/1461 useless extension candidates. Maximal degree in co-relation 8664. Up to 658 conditions per place. [2024-11-16 19:26:48,485 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 130 selfloop transitions, 116 changer transitions 8/263 dead transitions. [2024-11-16 19:26:48,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 263 transitions, 4050 flow [2024-11-16 19:26:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 19:26:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-16 19:26:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 253 transitions. [2024-11-16 19:26:48,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-11-16 19:26:48,486 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 2674 flow. Second operand 14 states and 253 transitions. [2024-11-16 19:26:48,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 263 transitions, 4050 flow [2024-11-16 19:26:48,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 263 transitions, 3986 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-16 19:26:48,530 INFO L231 Difference]: Finished difference. Result has 195 places, 207 transitions, 3424 flow [2024-11-16 19:26:48,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3424, PETRI_PLACES=195, PETRI_TRANSITIONS=207} [2024-11-16 19:26:48,530 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 159 predicate places. [2024-11-16 19:26:48,530 INFO L471 AbstractCegarLoop]: Abstraction has has 195 places, 207 transitions, 3424 flow [2024-11-16 19:26:48,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:48,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:48,531 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:48,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-16 19:26:48,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-16 19:26:48,731 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:48,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash -120249410, now seen corresponding path program 17 times [2024-11-16 19:26:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:48,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654214469] [2024-11-16 19:26:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:48,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654214469] [2024-11-16 19:26:49,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654214469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420298496] [2024-11-16 19:26:49,692 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 19:26:49,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:49,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:49,694 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:49,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-16 19:26:49,795 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:26:49,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:49,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:49,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:50,210 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:50,211 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 83 treesize of output 52 [2024-11-16 19:26:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:50,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:26:50,888 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-11-16 19:26:50,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 103 treesize of output 71 [2024-11-16 19:26:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:50,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420298496] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:50,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-16 19:26:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14, 14] total 35 [2024-11-16 19:26:50,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822078534] [2024-11-16 19:26:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:50,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:50,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 19:26:51,031 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:51,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 207 transitions, 3424 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:51,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:51,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:51,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:51,962 INFO L124 PetriNetUnfolderBase]: 777/1391 cut-off events. [2024-11-16 19:26:51,962 INFO L125 PetriNetUnfolderBase]: For 13200/13238 co-relation queries the response was YES. [2024-11-16 19:26:51,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 1391 events. 777/1391 cut-off events. For 13200/13238 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7175 event pairs, 84 based on Foata normal form. 11/1394 useless extension candidates. Maximal degree in co-relation 8841. Up to 637 conditions per place. [2024-11-16 19:26:51,974 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 119 selfloop transitions, 112 changer transitions 12/256 dead transitions. [2024-11-16 19:26:51,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 256 transitions, 4131 flow [2024-11-16 19:26:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 19:26:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-16 19:26:51,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 279 transitions. [2024-11-16 19:26:51,975 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-11-16 19:26:51,975 INFO L175 Difference]: Start difference. First operand has 195 places, 207 transitions, 3424 flow. Second operand 15 states and 279 transitions. [2024-11-16 19:26:51,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 256 transitions, 4131 flow [2024-11-16 19:26:52,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 256 transitions, 4115 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-16 19:26:52,032 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 3545 flow [2024-11-16 19:26:52,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3418, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3545, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2024-11-16 19:26:52,033 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 173 predicate places. [2024-11-16 19:26:52,033 INFO L471 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 3545 flow [2024-11-16 19:26:52,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:52,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:52,034 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:52,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-16 19:26:52,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-16 19:26:52,234 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:52,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash -310806398, now seen corresponding path program 18 times [2024-11-16 19:26:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:52,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539354418] [2024-11-16 19:26:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:52,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539354418] [2024-11-16 19:26:52,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539354418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:52,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995036016] [2024-11-16 19:26:52,899 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 19:26:52,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:52,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:52,901 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:52,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-16 19:26:52,981 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-16 19:26:52,981 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:26:52,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 19:26:52,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:53,095 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:53,096 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 83 treesize of output 52 [2024-11-16 19:26:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 19:26:53,189 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 19:26:53,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995036016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:26:53,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 19:26:53,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-11-16 19:26:53,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232216417] [2024-11-16 19:26:53,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:26:53,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 19:26:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:26:53,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 19:26:53,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-16 19:26:53,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-11-16 19:26:53,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 3545 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:53,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:26:53,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-11-16 19:26:53,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:26:53,572 INFO L124 PetriNetUnfolderBase]: 763/1365 cut-off events. [2024-11-16 19:26:53,572 INFO L125 PetriNetUnfolderBase]: For 14226/14264 co-relation queries the response was YES. [2024-11-16 19:26:53,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 1365 events. 763/1365 cut-off events. For 14226/14264 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7033 event pairs, 231 based on Foata normal form. 11/1368 useless extension candidates. Maximal degree in co-relation 8963. Up to 801 conditions per place. [2024-11-16 19:26:53,584 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 134 selfloop transitions, 67 changer transitions 15/229 dead transitions. [2024-11-16 19:26:53,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 229 transitions, 4101 flow [2024-11-16 19:26:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:26:53,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:26:53,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-11-16 19:26:53,585 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-16 19:26:53,586 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 3545 flow. Second operand 11 states and 196 transitions. [2024-11-16 19:26:53,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 229 transitions, 4101 flow [2024-11-16 19:26:53,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 229 transitions, 3876 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-16 19:26:53,659 INFO L231 Difference]: Finished difference. Result has 202 places, 195 transitions, 3339 flow [2024-11-16 19:26:53,659 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3320, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3339, PETRI_PLACES=202, PETRI_TRANSITIONS=195} [2024-11-16 19:26:53,660 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 166 predicate places. [2024-11-16 19:26:53,660 INFO L471 AbstractCegarLoop]: Abstraction has has 202 places, 195 transitions, 3339 flow [2024-11-16 19:26:53,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 19:26:53,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:26:53,661 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:26:53,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-16 19:26:53,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:53,861 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-16 19:26:53,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:26:53,862 INFO L85 PathProgramCache]: Analyzing trace with hash 73581766, now seen corresponding path program 19 times [2024-11-16 19:26:53,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:26:53,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047793362] [2024-11-16 19:26:53,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:26:53,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:26:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:54,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:54,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:26:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047793362] [2024-11-16 19:26:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047793362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:26:54,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56086455] [2024-11-16 19:26:54,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 19:26:54,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:26:54,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:26:54,544 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:26:54,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-16 19:26:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:26:54,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 19:26:54,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:26:55,002 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-11-16 19:26:55,002 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 83 treesize of output 52 [2024-11-16 19:26:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:26:55,074 INFO L311 TraceCheckSpWp]: Computing backward predicates...