./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_ok.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.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 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:04:35,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:04:35,570 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:04:35,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:04:35,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:04:35,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:04:35,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:04:35,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:04:35,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:04:35,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:04:35,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:04:35,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:04:35,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:04:35,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:04:35,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:04:35,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:04:35,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:04:35,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:04:35,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:04:35,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:04:35,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:04:35,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:04:35,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:04:35,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:04:35,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:04:35,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:04:35,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:04:35,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:04:35,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:04:35,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:04:35,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:04:35,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:04:35,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:35,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:04:35,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:04:35,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:04:35,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:04:35,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:04:35,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:04:35,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:04:35,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:04:35,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:04:35,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2024-11-16 19:04:35,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:04:35,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:04:35,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:04:35,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:04:35,893 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:04:35,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok.i [2024-11-16 19:04:37,324 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:04:37,598 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:04:37,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok.i [2024-11-16 19:04:37,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f1a3388/0c703e8fcaaf4bd091f943faa6b7c8b7/FLAG7eb66990b [2024-11-16 19:04:37,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f1a3388/0c703e8fcaaf4bd091f943faa6b7c8b7 [2024-11-16 19:04:37,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:04:37,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:04:37,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:37,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:04:37,916 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:04:37,917 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:37" (1/1) ... [2024-11-16 19:04:37,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a616f6f 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 19:04:37,918 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:04:37" (1/1) ... [2024-11-16 19:04:37,965 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:04:38,498 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.i[43266,43279] [2024-11-16 19:04:38,509 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.i[43543,43556] [2024-11-16 19:04:38,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,530 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:04:38,572 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.i[43266,43279] [2024-11-16 19:04:38,574 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.i[43543,43556] [2024-11-16 19:04:38,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:04:38,640 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:04:38,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:04:38 WrapperNode [2024-11-16 19:04:38,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:04:38,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:38,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:04:38,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:04:38,650 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 19:04:38,674 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 19:04:38,718 INFO L138 Inliner]: procedures = 274, calls = 92, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 235 [2024-11-16 19:04:38,722 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:04:38,723 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:04:38,723 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:04:38,723 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:04:38,737 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 19:04:38,741 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 19:04:38,750 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 19:04:38,782 INFO L175 MemorySlicer]: Split 75 memory accesses to 4 slices as follows [2, 5, 22, 46]. 61 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [2, 5, 20, 23]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-16 19:04:38,782 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 19:04:38,782 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 19:04:38,794 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 19:04:38,799 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 19:04:38,800 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 19:04:38,805 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 19:04:38,808 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:04:38,813 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:04:38,813 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:04:38,813 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:04:38,814 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 19:04:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:04:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:38,853 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 19:04:38,855 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 19:04:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-16 19:04:38,891 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-16 19:04:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-16 19:04:38,891 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-16 19:04:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:04:38,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:04:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:04:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:04:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:04:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:04:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:04:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:04:38,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:04:38,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:04:38,895 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 19:04:39,032 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:04:39,034 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:04:39,410 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:04:39,411 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:04:39,747 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:04:39,747 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:04:39,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:39 BoogieIcfgContainer [2024-11-16 19:04:39,747 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:04:39,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:04:39,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:04:39,755 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:04:39,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:04:37" (1/3) ... [2024-11-16 19:04:39,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440dfe77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:39, skipping insertion in model container [2024-11-16 19:04:39,756 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 19:04:39,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440dfe77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:04:39, skipping insertion in model container [2024-11-16 19:04:39,758 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:04:39" (3/3) ... [2024-11-16 19:04:39,760 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-11-16 19:04:39,779 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:04:39,780 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:04:39,780 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:04:39,851 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:04:39,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:04:39,932 INFO L124 PetriNetUnfolderBase]: 9/44 cut-off events. [2024-11-16 19:04:39,932 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:04:39,936 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 19:04:39,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 46 transitions, 106 flow [2024-11-16 19:04:39,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 42 transitions, 93 flow [2024-11-16 19:04:39,952 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:04:39,960 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;@6d97faa4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:04:39,960 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:04:39,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:04:39,966 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-11-16 19:04:39,966 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:04:39,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:39,967 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-16 19:04:39,968 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 19:04:39,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 552642, now seen corresponding path program 1 times [2024-11-16 19:04:39,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:39,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469313907] [2024-11-16 19:04:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:39,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:40,231 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 19:04:40,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469313907] [2024-11-16 19:04:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469313907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:40,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:04:40,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25587235] [2024-11-16 19:04:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:40,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:04:40,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:04:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:04:40,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:40,278 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 19:04:40,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:40,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:40,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:40,492 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-11-16 19:04:40,492 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-16 19:04:40,494 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 19:04:40,499 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 25 selfloop transitions, 0 changer transitions 2/36 dead transitions. [2024-11-16 19:04:40,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 135 flow [2024-11-16 19:04:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:04:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:04:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 55 transitions. [2024-11-16 19:04:40,511 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978260869565217 [2024-11-16 19:04:40,513 INFO L175 Difference]: Start difference. First operand has 40 places, 42 transitions, 93 flow. Second operand 2 states and 55 transitions. [2024-11-16 19:04:40,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 135 flow [2024-11-16 19:04:40,516 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 19:04:40,518 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 72 flow [2024-11-16 19:04:40,520 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 19:04:40,524 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2024-11-16 19:04:40,524 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 72 flow [2024-11-16 19:04:40,525 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 19:04:40,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:40,525 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:04:40,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:04:40,526 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 19:04:40,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -64713361, now seen corresponding path program 1 times [2024-11-16 19:04:40,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:40,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565233658] [2024-11-16 19:04:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:40,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:40,812 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 19:04:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565233658] [2024-11-16 19:04:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565233658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:04:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696094924] [2024-11-16 19:04:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:40,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:40,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:40,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:40,821 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 19:04:40,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:40,955 INFO L124 PetriNetUnfolderBase]: 147/319 cut-off events. [2024-11-16 19:04:40,958 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:04:40,960 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 19:04:40,961 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 27 selfloop transitions, 2 changer transitions 4/42 dead transitions. [2024-11-16 19:04:40,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 157 flow [2024-11-16 19:04:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-16 19:04:40,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-11-16 19:04:40,966 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 72 flow. Second operand 3 states and 70 transitions. [2024-11-16 19:04:40,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 157 flow [2024-11-16 19:04:40,968 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 19:04:40,970 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 78 flow [2024-11-16 19:04:40,970 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 19:04:40,971 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-11-16 19:04:40,971 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 78 flow [2024-11-16 19:04:40,971 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 19:04:40,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:40,973 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 19:04:40,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:04:40,974 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 19:04:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1547803961, now seen corresponding path program 1 times [2024-11-16 19:04:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:40,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336280337] [2024-11-16 19:04:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:41,092 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 19:04:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:41,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336280337] [2024-11-16 19:04:41,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336280337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:41,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:41,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:04:41,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000079930] [2024-11-16 19:04:41,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:41,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:41,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:41,099 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 19:04:41,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:41,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:41,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:41,239 INFO L124 PetriNetUnfolderBase]: 158/352 cut-off events. [2024-11-16 19:04:41,239 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-16 19:04:41,241 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 19:04:41,245 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 29 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-16 19:04:41,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 39 transitions, 154 flow [2024-11-16 19:04:41,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:41,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:41,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2024-11-16 19:04:41,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-11-16 19:04:41,248 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 78 flow. Second operand 3 states and 65 transitions. [2024-11-16 19:04:41,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 39 transitions, 154 flow [2024-11-16 19:04:41,248 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 19:04:41,251 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 86 flow [2024-11-16 19:04:41,251 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 19:04:41,252 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-16 19:04:41,252 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 86 flow [2024-11-16 19:04:41,253 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 19:04:41,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:41,253 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 19:04:41,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:04:41,254 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 19:04:41,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -764780937, now seen corresponding path program 1 times [2024-11-16 19:04:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008881084] [2024-11-16 19:04:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:41,382 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 19:04:41,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008881084] [2024-11-16 19:04:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008881084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772197956] [2024-11-16 19:04:41,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:41,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:41,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:41,387 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 19:04:41,389 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 19:04:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:41,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:04:41,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:41,604 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 19:04:41,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:41,634 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 19:04:41,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772197956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:41,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:41,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 19:04:41,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914946959] [2024-11-16 19:04:41,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:41,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:04:41,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:04:41,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:04:41,642 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:41,643 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 19:04:41,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:41,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:41,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:41,822 INFO L124 PetriNetUnfolderBase]: 185/427 cut-off events. [2024-11-16 19:04:41,823 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-16 19:04:41,824 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 19:04:41,825 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-16 19:04:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 57 transitions, 244 flow [2024-11-16 19:04:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:04:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:04:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-11-16 19:04:41,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.427536231884058 [2024-11-16 19:04:41,827 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 86 flow. Second operand 6 states and 118 transitions. [2024-11-16 19:04:41,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 57 transitions, 244 flow [2024-11-16 19:04:41,828 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 19:04:41,829 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 120 flow [2024-11-16 19:04:41,830 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 19:04:41,830 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2024-11-16 19:04:41,830 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 120 flow [2024-11-16 19:04:41,831 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 19:04:41,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:41,831 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 19:04:41,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 19:04:42,032 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 19:04:42,032 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 19:04:42,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:42,033 INFO L85 PathProgramCache]: Analyzing trace with hash -707716919, now seen corresponding path program 2 times [2024-11-16 19:04:42,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:42,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939873439] [2024-11-16 19:04:42,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:42,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:42,268 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 19:04:42,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:42,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939873439] [2024-11-16 19:04:42,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939873439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:04:42,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:04:42,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:04:42,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980450505] [2024-11-16 19:04:42,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:04:42,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:04:42,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:04:42,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:04:42,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-16 19:04:42,275 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 19:04:42,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:42,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-16 19:04:42,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:42,394 INFO L124 PetriNetUnfolderBase]: 130/345 cut-off events. [2024-11-16 19:04:42,395 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-11-16 19:04:42,396 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 19:04:42,397 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 31 selfloop transitions, 3 changer transitions 1/44 dead transitions. [2024-11-16 19:04:42,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 207 flow [2024-11-16 19:04:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:04:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:04:42,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-11-16 19:04:42,401 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-16 19:04:42,402 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 120 flow. Second operand 3 states and 69 transitions. [2024-11-16 19:04:42,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 207 flow [2024-11-16 19:04:42,404 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 19:04:42,406 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 118 flow [2024-11-16 19:04:42,406 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 19:04:42,407 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-11-16 19:04:42,408 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 118 flow [2024-11-16 19:04:42,408 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 19:04:42,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:42,409 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 19:04:42,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:04:42,409 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 19:04:42,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:42,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1813322431, now seen corresponding path program 1 times [2024-11-16 19:04:42,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:42,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88086125] [2024-11-16 19:04:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:42,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:42,606 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 19:04:42,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:42,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88086125] [2024-11-16 19:04:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88086125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:42,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107083621] [2024-11-16 19:04:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:42,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:42,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:42,610 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 19:04:42,611 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 19:04:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:42,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:04:42,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:42,811 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 19:04:42,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:42,887 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 19:04:42,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107083621] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:42,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:42,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 19:04:42,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693742107] [2024-11-16 19:04:42,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:42,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:04:42,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:42,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:04:42,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:04:42,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:42,892 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 19:04:42,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:42,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:42,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:43,132 INFO L124 PetriNetUnfolderBase]: 172/432 cut-off events. [2024-11-16 19:04:43,132 INFO L125 PetriNetUnfolderBase]: For 651/651 co-relation queries the response was YES. [2024-11-16 19:04:43,134 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 19:04:43,136 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 64 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-11-16 19:04:43,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 404 flow [2024-11-16 19:04:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:04:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:04:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 213 transitions. [2024-11-16 19:04:43,140 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3858695652173913 [2024-11-16 19:04:43,140 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 118 flow. Second operand 12 states and 213 transitions. [2024-11-16 19:04:43,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 404 flow [2024-11-16 19:04:43,142 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 19:04:43,158 INFO L231 Difference]: Finished difference. Result has 62 places, 43 transitions, 199 flow [2024-11-16 19:04:43,160 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 19:04:43,161 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2024-11-16 19:04:43,162 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 43 transitions, 199 flow [2024-11-16 19:04:43,163 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 19:04:43,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:43,163 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 19:04:43,181 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 19:04:43,364 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 19:04:43,364 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 19:04:43,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1842861349, now seen corresponding path program 2 times [2024-11-16 19:04:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:43,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456802778] [2024-11-16 19:04:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:04:43,739 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 19:04:43,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:04:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456802778] [2024-11-16 19:04:43,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456802778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:04:43,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072248422] [2024-11-16 19:04:43,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:04:43,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:04:43,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:04:43,742 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 19:04:43,743 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 19:04:44,016 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:04:44,016 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:04:44,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 19:04:44,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:04:44,093 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 19:04:44,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:04:44,341 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 19:04:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072248422] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:04:44,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:04:44,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-11-16 19:04:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650604518] [2024-11-16 19:04:44,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:04:44,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 19:04:44,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:04:44,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 19:04:44,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-11-16 19:04:44,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-11-16 19:04:44,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 43 transitions, 199 flow. Second operand has 23 states, 23 states have (on average 12.782608695652174) internal successors, (294), 23 states have internal predecessors, (294), 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 19:04:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:04:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-11-16 19:04:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:04:44,715 INFO L124 PetriNetUnfolderBase]: 232/612 cut-off events. [2024-11-16 19:04:44,715 INFO L125 PetriNetUnfolderBase]: For 4563/4563 co-relation queries the response was YES. [2024-11-16 19:04:44,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1657 conditions, 612 events. 232/612 cut-off events. For 4563/4563 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2034 event pairs, 96 based on Foata normal form. 60/651 useless extension candidates. Maximal degree in co-relation 1640. Up to 219 conditions per place. [2024-11-16 19:04:44,726 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 104 selfloop transitions, 21 changer transitions 0/133 dead transitions. [2024-11-16 19:04:44,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 133 transitions, 729 flow [2024-11-16 19:04:44,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 19:04:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-16 19:04:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 377 transitions. [2024-11-16 19:04:44,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3725296442687747 [2024-11-16 19:04:44,732 INFO L175 Difference]: Start difference. First operand has 62 places, 43 transitions, 199 flow. Second operand 22 states and 377 transitions. [2024-11-16 19:04:44,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 133 transitions, 729 flow [2024-11-16 19:04:44,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 673 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-16 19:04:44,741 INFO L231 Difference]: Finished difference. Result has 88 places, 53 transitions, 307 flow [2024-11-16 19:04:44,742 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=22, PETRI_FLOW=307, PETRI_PLACES=88, PETRI_TRANSITIONS=53} [2024-11-16 19:04:44,742 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-11-16 19:04:44,743 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 53 transitions, 307 flow [2024-11-16 19:04:44,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.782608695652174) internal successors, (294), 23 states have internal predecessors, (294), 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 19:04:44,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:04:44,744 INFO L204 CegarLoopForPetriNet]: trace histogram [21, 20, 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 19:04:44,764 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 19:04:44,945 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 19:04:44,946 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 19:04:44,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:04:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash 985457907, now seen corresponding path program 3 times [2024-11-16 19:04:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:04:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758285507] [2024-11-16 19:04:44,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:04:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:04:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:05:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:05:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:05:22,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758285507] [2024-11-16 19:05:22,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758285507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:05:22,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454256160] [2024-11-16 19:05:22,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 19:05:22,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:05:22,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:05:22,246 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 19:05:22,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process