./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --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/pthread/queue_ok_longer.i -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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:04:35,628 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:04:35,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:04:35,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:04:35,727 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:04:35,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:04:35,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:04:35,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:04:35,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:04:35,752 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:04:35,752 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:04:35,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:04:35,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:04:35,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:04:35,753 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:04:35,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:04:35,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:04:35,754 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:04:35,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:04:35,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:04:35,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:04:35,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:04:35,757 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:04:35,757 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:04:35,757 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:04:35,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:04:35,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:04:35,758 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:04:35,758 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:04:35,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:04:35,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:04:35,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:04:35,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:35,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:04:35,760 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:04:35,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:04:35,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-11-16 19:04:35,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:04:35,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:04:35,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:04:35,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:04:35,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:04:35,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-16 19:04:37,243 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:04:37,457 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:04:37,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-16 19:04:37,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9137400/0ff698880f4c4811a2373caebf96387f/FLAG54fe13dfe [2024-11-16 19:04:37,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9137400/0ff698880f4c4811a2373caebf96387f [2024-11-16 19:04:37,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:04:37,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:04:37,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:37,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:04:37,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:04:37,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:37" (1/1) ... [2024-11-16 19:04:37,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bd8218b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:37, skipping insertion in model container [2024-11-16 19:04:37,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:37" (1/1) ... [2024-11-16 19:04:37,865 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:04:38,551 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/pthread/queue_ok_longer.i[43272,43285] [2024-11-16 19:04:38,563 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/pthread/queue_ok_longer.i[43545,43558] [2024-11-16 19:04:38,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,626 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:04:38,659 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/pthread/queue_ok_longer.i[43272,43285] [2024-11-16 19:04:38,660 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/pthread/queue_ok_longer.i[43545,43558] [2024-11-16 19:04:38,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,733 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:04:38,734 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38 WrapperNode [2024-11-16 19:04:38,734 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:38,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:38,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:04:38,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:04:38,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,825 INFO L138 Inliner]: procedures = 274, calls = 852, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 995 [2024-11-16 19:04:38,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:38,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:04:38,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:04:38,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:04:38,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,849 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,882 INFO L175 MemorySlicer]: Split 835 memory accesses to 4 slices as follows [2, 5, 402, 426]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [2, 5, 400, 403]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-16 19:04:38,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,901 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,911 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,916 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:04:38,916 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:04:38,917 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:04:38,917 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:04:38,917 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (1/1) ... [2024-11-16 19:04:38,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:38,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:38,946 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 19:04:38,954 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 19:04:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-16 19:04:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-16 19:04:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-16 19:04:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-16 19:04:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:04:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:04:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:04:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:04:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:04:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:04:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:04:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:04:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:04:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:04:38,999 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 19:04:39,114 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:04:39,116 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:04:40,034 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:04:40,034 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:04:46,433 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:04:46,438 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:04:46,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:46 BoogieIcfgContainer [2024-11-16 19:04:46,438 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:04:46,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:04:46,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:04:46,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:04:46,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:04:37" (1/3) ... [2024-11-16 19:04:46,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7be2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:46, skipping insertion in model container [2024-11-16 19:04:46,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38" (2/3) ... [2024-11-16 19:04:46,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7be2d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:46, skipping insertion in model container [2024-11-16 19:04:46,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:46" (3/3) ... [2024-11-16 19:04:46,449 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-11-16 19:04:46,463 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:04:46,463 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:04:46,463 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:04:46,525 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:04:46,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:04:46,608 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-11-16 19:04:46,609 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:04:46,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 9/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 36. Up to 3 conditions per place. [2024-11-16 19:04:46,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:04:46,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 42 transitions, 93 flow [2024-11-16 19:04:46,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:04:46,627 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;@45cd0275, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:04:46,627 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:04:46,660 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:04:46,660 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-11-16 19:04:46,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:04:46,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:46,661 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-16 19:04:46,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:46,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2062002, now seen corresponding path program 1 times [2024-11-16 19:04:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41946033] [2024-11-16 19:04:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:47,041 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 19:04:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41946033] [2024-11-16 19:04:47,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41946033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:47,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:04:47,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93699450] [2024-11-16 19:04:47,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:47,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:04:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:47,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:04:47,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:04:47,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:47,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 93 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 19:04:47,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:47,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:47,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:47,257 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-11-16 19:04:47,257 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-16 19:04:47,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 527 events. 285/527 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2350 event pairs, 196 based on Foata normal form. 52/530 useless extension candidates. Maximal degree in co-relation 934. Up to 453 conditions per place. [2024-11-16 19:04:47,262 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 25 selfloop transitions, 0 changer transitions 2/36 dead transitions. [2024-11-16 19:04:47,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 135 flow [2024-11-16 19:04:47,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:04:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:04:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-16 19:04:47,271 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-16 19:04:47,272 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 93 flow. Second operand 2 states and 55 transitions. [2024-11-16 19:04:47,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 135 flow [2024-11-16 19:04:47,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:04:47,276 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 72 flow [2024-11-16 19:04:47,277 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-16 19:04:47,279 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-16 19:04:47,280 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 72 flow [2024-11-16 19:04:47,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 19:04:47,280 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:47,280 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:04:47,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:04:47,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:47,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1593630369, now seen corresponding path program 1 times [2024-11-16 19:04:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144681806] [2024-11-16 19:04:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:47,969 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 19:04:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144681806] [2024-11-16 19:04:47,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144681806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:47,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:04:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084410177] [2024-11-16 19:04:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:47,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:47,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:47,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:47,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:47,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:47,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:04:47,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:47,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:47,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:48,114 INFO L124 PetriNetUnfolderBase]: 147/319 cut-off events. [2024-11-16 19:04:48,114 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:04:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609 conditions, 319 events. 147/319 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1159 event pairs, 76 based on Foata normal form. 13/304 useless extension candidates. Maximal degree in co-relation 606. Up to 146 conditions per place. [2024-11-16 19:04:48,117 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 27 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2024-11-16 19:04:48,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 157 flow [2024-11-16 19:04:48,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-16 19:04:48,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-16 19:04:48,119 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 72 flow. Second operand 3 states and 70 transitions. [2024-11-16 19:04:48,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 157 flow [2024-11-16 19:04:48,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 157 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:04:48,121 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 78 flow [2024-11-16 19:04:48,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-11-16 19:04:48,123 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-16 19:04:48,123 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 78 flow [2024-11-16 19:04:48,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:04:48,124 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:48,124 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] [2024-11-16 19:04:48,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:04:48,125 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:48,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:48,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1623017273, now seen corresponding path program 1 times [2024-11-16 19:04:48,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:48,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090640150] [2024-11-16 19:04:48,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:48,325 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 19:04:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090640150] [2024-11-16 19:04:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090640150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:48,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:48,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:04:48,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134734010] [2024-11-16 19:04:48,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:48,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:48,329 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:48,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 78 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 19:04:48,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:48,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:48,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:48,465 INFO L124 PetriNetUnfolderBase]: 158/352 cut-off events. [2024-11-16 19:04:48,465 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-16 19:04:48,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 352 events. 158/352 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1295 event pairs, 127 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 689. Up to 274 conditions per place. [2024-11-16 19:04:48,467 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-16 19:04:48,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 154 flow [2024-11-16 19:04:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:48,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-16 19:04:48,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-11-16 19:04:48,469 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 78 flow. Second operand 3 states and 65 transitions. [2024-11-16 19:04:48,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 154 flow [2024-11-16 19:04:48,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:04:48,470 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 86 flow [2024-11-16 19:04:48,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-16 19:04:48,471 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-16 19:04:48,471 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 86 flow [2024-11-16 19:04:48,472 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 19:04:48,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:48,472 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] [2024-11-16 19:04:48,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:04:48,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:48,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1499183497, now seen corresponding path program 1 times [2024-11-16 19:04:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253312881] [2024-11-16 19:04:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:48,668 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 19:04:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253312881] [2024-11-16 19:04:48,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253312881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:48,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197132602] [2024-11-16 19:04:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:48,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:48,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:48,674 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 19:04:48,676 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 19:04:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:49,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:04:49,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:49,038 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 19:04:49,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:49,060 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 19:04:49,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197132602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:49,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:49,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:04:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645540816] [2024-11-16 19:04:49,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:49,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:04:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:04:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:04:49,068 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:49,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 19:04:49,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:49,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:49,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:49,300 INFO L124 PetriNetUnfolderBase]: 185/427 cut-off events. [2024-11-16 19:04:49,300 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-16 19:04:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 427 events. 185/427 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1565 event pairs, 127 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 876. Up to 274 conditions per place. [2024-11-16 19:04:49,303 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-16 19:04:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 244 flow [2024-11-16 19:04:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:04:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:04:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-16 19:04:49,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2024-11-16 19:04:49,304 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 6 states and 118 transitions. [2024-11-16 19:04:49,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 244 flow [2024-11-16 19:04:49,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:04:49,306 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 120 flow [2024-11-16 19:04:49,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-11-16 19:04:49,307 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-16 19:04:49,307 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 120 flow [2024-11-16 19:04:49,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 19:04:49,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:49,307 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:04:49,326 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 19:04:49,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:49,509 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:49,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash -113722679, now seen corresponding path program 2 times [2024-11-16 19:04:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:49,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304737459] [2024-11-16 19:04:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 19:04:49,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:49,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304737459] [2024-11-16 19:04:49,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304737459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:49,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:49,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:04:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97740343] [2024-11-16 19:04:49,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:49,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:49,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:49,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:49,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:49,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:49,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 19:04:49,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:49,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:49,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:50,006 INFO L124 PetriNetUnfolderBase]: 130/345 cut-off events. [2024-11-16 19:04:50,006 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-16 19:04:50,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 760 conditions, 345 events. 130/345 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1251 event pairs, 33 based on Foata normal form. 16/351 useless extension candidates. Maximal degree in co-relation 751. Up to 178 conditions per place. [2024-11-16 19:04:50,008 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 31 selfloop transitions, 3 changer transitions 1/44 dead transitions. [2024-11-16 19:04:50,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 207 flow [2024-11-16 19:04:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-16 19:04:50,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:04:50,009 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 120 flow. Second operand 3 states and 69 transitions. [2024-11-16 19:04:50,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 207 flow [2024-11-16 19:04:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 199 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:04:50,011 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2024-11-16 19:04:50,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-11-16 19:04:50,012 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-16 19:04:50,012 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2024-11-16 19:04:50,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 19:04:50,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:50,013 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 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 19:04:50,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:04:50,013 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:50,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1247691089, now seen corresponding path program 1 times [2024-11-16 19:04:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:50,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663661875] [2024-11-16 19:04:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:50,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:50,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663661875] [2024-11-16 19:04:50,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663661875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:50,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271914048] [2024-11-16 19:04:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:50,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:50,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:50,250 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 19:04:50,251 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 19:04:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:50,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:04:50,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:50,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:50,625 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:50,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271914048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:50,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:50,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:04:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955215751] [2024-11-16 19:04:50,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:50,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:04:50,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:04:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:04:50,627 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:50,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 118 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 19:04:50,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:50,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:50,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:50,966 INFO L124 PetriNetUnfolderBase]: 172/432 cut-off events. [2024-11-16 19:04:50,966 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES. [2024-11-16 19:04:50,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 432 events. 172/432 cut-off events. For 651/651 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1434 event pairs, 96 based on Foata normal form. 36/447 useless extension candidates. Maximal degree in co-relation 1016. Up to 219 conditions per place. [2024-11-16 19:04:50,969 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 64 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-11-16 19:04:50,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 404 flow [2024-11-16 19:04:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:04:50,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:04:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-16 19:04:50,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913 [2024-11-16 19:04:50,971 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 12 states and 213 transitions. [2024-11-16 19:04:50,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 404 flow [2024-11-16 19:04:50,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:04:50,973 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 199 flow [2024-11-16 19:04:50,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=199, PETRI_PLACES=62, PETRI_TRANSITIONS=43} [2024-11-16 19:04:50,974 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-16 19:04:50,974 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 199 flow [2024-11-16 19:04:50,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 19:04:50,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:50,975 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 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 19:04:50,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:04:51,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 19:04:51,176 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:51,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash -789423413, now seen corresponding path program 2 times [2024-11-16 19:04:51,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:51,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422644544] [2024-11-16 19:04:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422644544] [2024-11-16 19:04:51,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422644544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372020010] [2024-11-16 19:04:51,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:04:51,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:51,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:51,638 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 19:04:51,641 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 19:04:52,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:04:52,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:04:52,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 2031 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:04:52,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:52,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:52,564 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372020010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:52,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:52,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 19:04:52,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920545368] [2024-11-16 19:04:52,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:52,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 19:04:52,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:52,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 19:04:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 19:04:52,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:52,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 199 flow. Second operand has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 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 19:04:52,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:52,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:52,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:52,891 INFO L124 PetriNetUnfolderBase]: 244/648 cut-off events. [2024-11-16 19:04:52,891 INFO L125 PetriNetUnfolderBase]: For 5295/5295 co-relation queries the response was YES. [2024-11-16 19:04:52,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1757 conditions, 648 events. 244/648 cut-off events. For 5295/5295 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2152 event pairs, 96 based on Foata normal form. 72/699 useless extension candidates. Maximal degree in co-relation 1740. Up to 219 conditions per place. [2024-11-16 19:04:52,895 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 112 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-11-16 19:04:52,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 143 transitions, 785 flow [2024-11-16 19:04:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 19:04:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-16 19:04:52,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 411 transitions. [2024-11-16 19:04:52,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37228260869565216 [2024-11-16 19:04:52,897 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 199 flow. Second operand 24 states and 411 transitions. [2024-11-16 19:04:52,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 143 transitions, 785 flow [2024-11-16 19:04:52,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 143 transitions, 725 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:04:52,903 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 331 flow [2024-11-16 19:04:52,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=331, PETRI_PLACES=92, PETRI_TRANSITIONS=55} [2024-11-16 19:04:52,904 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-11-16 19:04:52,904 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 331 flow [2024-11-16 19:04:52,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.68) internal successors, (317), 25 states have internal predecessors, (317), 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 19:04:52,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:52,904 INFO L204 CegarLoopForPetriNet]: trace histogram [23, 22, 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 19:04:52,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 19:04:53,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:53,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:04:53,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash -197378533, now seen corresponding path program 3 times [2024-11-16 19:04:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:53,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127237934] [2024-11-16 19:04:53,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:53,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:04:54,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:54,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127237934] [2024-11-16 19:04:54,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127237934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877956177] [2024-11-16 19:04:54,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:04:54,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:54,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:54,162 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 19:04:54,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process