./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 02:22:44,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:22:44,636 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:22:44,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:22:44,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:22:44,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:22:44,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:22:44,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:22:44,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:22:44,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:22:44,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:22:44,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:22:44,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:22:44,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:22:44,676 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:22:44,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:22:44,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:22:44,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:22:44,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:22:44,678 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:22:44,678 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:22:44,681 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:22:44,681 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:22:44,681 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:22:44,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:22:44,682 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:22:44,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:22:44,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:22:44,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:22:44,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:22:44,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:22:44,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:22:44,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:22:44,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:22:44,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:22:44,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:22:44,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:22:44,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:22:44,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:22:44,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:22:44,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:22:44,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:22:44,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-11-09 02:22:44,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:22:44,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:22:44,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:22:44,946 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:22:44,947 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:22:44,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-09 02:22:46,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:22:46,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:22:46,697 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-09 02:22:46,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1e9e641/1aad370eac5544708b94074c04c21bab/FLAG60737f198 [2024-11-09 02:22:46,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f1e9e641/1aad370eac5544708b94074c04c21bab [2024-11-09 02:22:46,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:22:46,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:22:46,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:22:46,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:22:46,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:22:46,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:22:46" (1/1) ... [2024-11-09 02:22:46,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d7da5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:46, skipping insertion in model container [2024-11-09 02:22:46,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:22:46" (1/1) ... [2024-11-09 02:22:46,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:22:47,226 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] [2024-11-09 02:22:47,234 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] [2024-11-09 02:22:47,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:22:47,278 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:22:47,338 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] [2024-11-09 02:22:47,340 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] [2024-11-09 02:22:47,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:22:47,484 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:22:47,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47 WrapperNode [2024-11-09 02:22:47,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:22:47,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:22:47,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:22:47,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:22:47,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,650 INFO L138 Inliner]: procedures = 274, calls = 852, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 997 [2024-11-09 02:22:47,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:22:47,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:22:47,652 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:22:47,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:22:47,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,668 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,762 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]. [2024-11-09 02:22:47,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,806 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,825 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:22:47,859 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:22:47,859 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:22:47,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:22:47,860 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (1/1) ... [2024-11-09 02:22:47,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:22:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:22:47,901 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) [2024-11-09 02:22:47,904 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 [2024-11-09 02:22:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-09 02:22:47,947 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-09 02:22:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-09 02:22:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-09 02:22:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:22:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:22:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:22:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:22:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:22:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:22:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:22:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:22:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:22:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:22:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:22:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:22:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:22:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:22:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:22:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:22:47,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:22:47,956 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 02:22:48,136 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:22:48,139 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:22:49,302 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:22:49,303 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:22:56,718 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:22:56,720 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:22:56,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:22:56 BoogieIcfgContainer [2024-11-09 02:22:56,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:22:56,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:22:56,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:22:56,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:22:56,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:22:46" (1/3) ... [2024-11-09 02:22:56,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d075bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:22:56, skipping insertion in model container [2024-11-09 02:22:56,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:22:47" (2/3) ... [2024-11-09 02:22:56,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d075bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:22:56, skipping insertion in model container [2024-11-09 02:22:56,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:22:56" (3/3) ... [2024-11-09 02:22:56,730 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-11-09 02:22:56,749 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:22:56,749 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 02:22:56,749 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:22:56,857 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:22:56,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 40 transitions, 94 flow [2024-11-09 02:22:56,975 INFO L124 PetriNetUnfolderBase]: 7/38 cut-off events. [2024-11-09 02:22:56,975 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:22:56,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 7/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 30. Up to 3 conditions per place. [2024-11-09 02:22:56,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 40 transitions, 94 flow [2024-11-09 02:22:56,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 36 transitions, 81 flow [2024-11-09 02:22:56,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:22:57,008 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;@8754645, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:22:57,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:22:57,059 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:22:57,059 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-09 02:22:57,059 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:22:57,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:22:57,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 02:22:57,061 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)] === [2024-11-09 02:22:57,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:22:57,066 INFO L85 PathProgramCache]: Analyzing trace with hash 2119761, now seen corresponding path program 1 times [2024-11-09 02:22:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:22:57,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384991061] [2024-11-09 02:22:57,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:22:57,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:22:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:22:57,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:22:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:22:57,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384991061] [2024-11-09 02:22:57,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384991061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:22:57,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:22:57,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:22:57,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110636366] [2024-11-09 02:22:57,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:22:57,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:22:57,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:22:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:22:57,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:22:57,639 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:22:57,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 02:22:57,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:22:57,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:22:57,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:22:58,106 INFO L124 PetriNetUnfolderBase]: 288/497 cut-off events. [2024-11-09 02:22:58,107 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 02:22:58,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 497 events. 288/497 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1963 event pairs, 197 based on Foata normal form. 15/435 useless extension candidates. Maximal degree in co-relation 910. Up to 458 conditions per place. [2024-11-09 02:22:58,115 INFO L140 encePairwiseOnDemand]: 38/40 looper letters, 25 selfloop transitions, 0 changer transitions 2/32 dead transitions. [2024-11-09 02:22:58,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 127 flow [2024-11-09 02:22:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:22:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:22:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2024-11-09 02:22:58,129 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-09 02:22:58,131 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 2 states and 45 transitions. [2024-11-09 02:22:58,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 127 flow [2024-11-09 02:22:58,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 02:22:58,136 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 64 flow [2024-11-09 02:22:58,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-09 02:22:58,142 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2024-11-09 02:22:58,142 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 64 flow [2024-11-09 02:22:58,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2024-11-09 02:22:58,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:22:58,143 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:22:58,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:22:58,144 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)] === [2024-11-09 02:22:58,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:22:58,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1358846094, now seen corresponding path program 1 times [2024-11-09 02:22:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:22:58,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505408677] [2024-11-09 02:22:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:22:58,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:22:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:22:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:22:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:22:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505408677] [2024-11-09 02:22:58,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505408677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:22:58,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:22:58,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:22:58,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782432460] [2024-11-09 02:22:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:22:58,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:22:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:22:58,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:22:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:22:58,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:22:58,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 02:22:58,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:22:58,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:22:58,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:22:59,034 INFO L124 PetriNetUnfolderBase]: 147/301 cut-off events. [2024-11-09 02:22:59,035 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:22:59,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 301 events. 147/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1068 event pairs, 76 based on Foata normal form. 13/279 useless extension candidates. Maximal degree in co-relation 588. Up to 146 conditions per place. [2024-11-09 02:22:59,037 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 27 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2024-11-09 02:22:59,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 149 flow [2024-11-09 02:22:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:22:59,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:22:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-09 02:22:59,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-11-09 02:22:59,039 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 64 flow. Second operand 3 states and 58 transitions. [2024-11-09 02:22:59,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 149 flow [2024-11-09 02:22:59,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:22:59,042 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-11-09 02:22:59,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-09 02:22:59,043 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-09 02:22:59,043 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-11-09 02:22:59,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2024-11-09 02:22:59,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:22:59,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:22:59,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:22:59,044 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)] === [2024-11-09 02:22:59,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:22:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash 520829603, now seen corresponding path program 1 times [2024-11-09 02:22:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:22:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629971068] [2024-11-09 02:22:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:22:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:22:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:22:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:22:59,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:22:59,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629971068] [2024-11-09 02:22:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629971068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:22:59,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:22:59,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:22:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884062796] [2024-11-09 02:22:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:22:59,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:22:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:22:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:22:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:22:59,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:22:59,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:22:59,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:22:59,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:22:59,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:22:59,533 INFO L124 PetriNetUnfolderBase]: 149/306 cut-off events. [2024-11-09 02:22:59,534 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-09 02:22:59,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 306 events. 149/306 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1063 event pairs, 118 based on Foata normal form. 8/294 useless extension candidates. Maximal degree in co-relation 624. Up to 257 conditions per place. [2024-11-09 02:22:59,536 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-11-09 02:22:59,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 144 flow [2024-11-09 02:22:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:22:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:22:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-09 02:22:59,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-09 02:22:59,539 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 3 states and 55 transitions. [2024-11-09 02:22:59,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 144 flow [2024-11-09 02:22:59,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:22:59,540 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 78 flow [2024-11-09 02:22:59,541 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-09 02:22:59,541 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-09 02:22:59,541 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 78 flow [2024-11-09 02:22:59,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:22:59,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:22:59,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:22:59,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:22:59,543 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)] === [2024-11-09 02:22:59,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:22:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash -637193084, now seen corresponding path program 1 times [2024-11-09 02:22:59,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:22:59,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134887062] [2024-11-09 02:22:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:22:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:22:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:22:59,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:22:59,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:22:59,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134887062] [2024-11-09 02:22:59,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134887062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:22:59,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:22:59,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 02:22:59,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548093505] [2024-11-09 02:22:59,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:22:59,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:22:59,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:22:59,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:22:59,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:22:59,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:22:59,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-09 02:22:59,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:22:59,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:22:59,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:00,212 INFO L124 PetriNetUnfolderBase]: 112/263 cut-off events. [2024-11-09 02:23:00,213 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-09 02:23:00,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 263 events. 112/263 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 913 event pairs, 33 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 543. Up to 142 conditions per place. [2024-11-09 02:23:00,217 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 28 selfloop transitions, 3 changer transitions 1/37 dead transitions. [2024-11-09 02:23:00,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 159 flow [2024-11-09 02:23:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:23:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:23:00,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-11-09 02:23:00,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-11-09 02:23:00,221 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 57 transitions. [2024-11-09 02:23:00,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 159 flow [2024-11-09 02:23:00,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 155 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:23:00,222 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 80 flow [2024-11-09 02:23:00,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-09 02:23:00,224 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-09 02:23:00,225 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 80 flow [2024-11-09 02:23:00,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-09 02:23:00,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:00,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:00,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:23:00,226 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)] === [2024-11-09 02:23:00,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1531962213, now seen corresponding path program 1 times [2024-11-09 02:23:00,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:00,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643041239] [2024-11-09 02:23:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:00,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643041239] [2024-11-09 02:23:00,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643041239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:23:00,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584054464] [2024-11-09 02:23:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:00,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:23:00,548 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) [2024-11-09 02:23:00,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:23:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:00,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 1803 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:23:00,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:23:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:00,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:23:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:01,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584054464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:23:01,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:23:01,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 02:23:01,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598003651] [2024-11-09 02:23:01,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:23:01,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:23:01,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:01,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:23:01,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:23:01,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:23:01,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 80 flow. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:01,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:01,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:23:01,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:01,316 INFO L124 PetriNetUnfolderBase]: 130/281 cut-off events. [2024-11-09 02:23:01,316 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-09 02:23:01,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 281 events. 130/281 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 898 event pairs, 90 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 641. Up to 207 conditions per place. [2024-11-09 02:23:01,318 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 39 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-11-09 02:23:01,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 220 flow [2024-11-09 02:23:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:23:01,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:23:01,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-11-09 02:23:01,319 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-11-09 02:23:01,320 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 80 flow. Second operand 6 states and 95 transitions. [2024-11-09 02:23:01,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 220 flow [2024-11-09 02:23:01,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 49 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:23:01,321 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 113 flow [2024-11-09 02:23:01,322 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=113, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2024-11-09 02:23:01,322 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2024-11-09 02:23:01,323 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 113 flow [2024-11-09 02:23:01,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:01,323 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:01,323 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:01,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:23:01,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:01,528 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)] === [2024-11-09 02:23:01,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1516568830, now seen corresponding path program 2 times [2024-11-09 02:23:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:01,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924598868] [2024-11-09 02:23:01,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:01,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:01,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:01,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924598868] [2024-11-09 02:23:01,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924598868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:23:01,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38183927] [2024-11-09 02:23:01,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:23:01,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:01,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:23:01,873 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) [2024-11-09 02:23:01,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:23:02,482 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:23:02,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:23:02,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 1875 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:23:02,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:23:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:02,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:23:02,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38183927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:23:02,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:23:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 02:23:02,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401225079] [2024-11-09 02:23:02,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:23:02,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:23:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:23:02,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:23:02,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:23:02,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 113 flow. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:02,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:23:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:03,001 INFO L124 PetriNetUnfolderBase]: 166/353 cut-off events. [2024-11-09 02:23:03,001 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-09 02:23:03,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 353 events. 166/353 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1097 event pairs, 90 based on Foata normal form. 36/374 useless extension candidates. Maximal degree in co-relation 921. Up to 207 conditions per place. [2024-11-09 02:23:03,004 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 63 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-11-09 02:23:03,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 397 flow [2024-11-09 02:23:03,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:23:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:23:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 176 transitions. [2024-11-09 02:23:03,006 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-11-09 02:23:03,006 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 113 flow. Second operand 12 states and 176 transitions. [2024-11-09 02:23:03,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 397 flow [2024-11-09 02:23:03,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 383 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:23:03,011 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 183 flow [2024-11-09 02:23:03,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=183, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2024-11-09 02:23:03,012 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2024-11-09 02:23:03,013 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 183 flow [2024-11-09 02:23:03,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:23:03,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:03,015 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:03,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 02:23:03,215 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 [2024-11-09 02:23:03,216 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)] === [2024-11-09 02:23:03,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash -373055330, now seen corresponding path program 3 times [2024-11-09 02:23:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:03,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563321836] [2024-11-09 02:23:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:03,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563321836] [2024-11-09 02:23:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563321836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:23:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178685209] [2024-11-09 02:23:03,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:23:03,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:23:03,907 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) [2024-11-09 02:23:03,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:23:11,974 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-09 02:23:11,974 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:23:12,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 02:23:12,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:23:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:12,034 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:23:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:12,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178685209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:23:12,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:23:12,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 02:23:12,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072117331] [2024-11-09 02:23:12,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:23:12,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:23:12,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:12,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:23:12,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:23:12,228 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:23:12,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 39 transitions, 183 flow. Second operand has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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) [2024-11-09 02:23:12,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:12,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:23:12,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:13,001 INFO L124 PetriNetUnfolderBase]: 238/497 cut-off events. [2024-11-09 02:23:13,002 INFO L125 PetriNetUnfolderBase]: For 2908/2908 co-relation queries the response was YES. [2024-11-09 02:23:13,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568 conditions, 497 events. 238/497 cut-off events. For 2908/2908 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1495 event pairs, 90 based on Foata normal form. 72/554 useless extension candidates. Maximal degree in co-relation 1551. Up to 207 conditions per place. [2024-11-09 02:23:13,006 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 111 selfloop transitions, 23 changer transitions 0/139 dead transitions. [2024-11-09 02:23:13,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 767 flow [2024-11-09 02:23:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 02:23:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 02:23:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 338 transitions. [2024-11-09 02:23:13,009 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35208333333333336 [2024-11-09 02:23:13,009 INFO L175 Difference]: Start difference. First operand has 58 places, 39 transitions, 183 flow. Second operand 24 states and 338 transitions. [2024-11-09 02:23:13,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 767 flow [2024-11-09 02:23:13,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 695 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-11-09 02:23:13,025 INFO L231 Difference]: Finished difference. Result has 88 places, 51 transitions, 303 flow [2024-11-09 02:23:13,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=303, PETRI_PLACES=88, PETRI_TRANSITIONS=51} [2024-11-09 02:23:13,026 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 52 predicate places. [2024-11-09 02:23:13,026 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 51 transitions, 303 flow [2024-11-09 02:23:13,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.68) internal successors, (242), 25 states have internal predecessors, (242), 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) [2024-11-09 02:23:13,029 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:13,029 INFO L204 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:13,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:23:13,230 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 [2024-11-09 02:23:13,231 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)] === [2024-11-09 02:23:13,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:13,232 INFO L85 PathProgramCache]: Analyzing trace with hash -291489826, now seen corresponding path program 4 times [2024-11-09 02:23:13,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621525846] [2024-11-09 02:23:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:13,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:14,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:14,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621525846] [2024-11-09 02:23:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621525846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:23:14,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128786609] [2024-11-09 02:23:14,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:23:14,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:14,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:23:14,796 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) [2024-11-09 02:23:14,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:23:15,351 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:23:15,351 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:23:15,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 2307 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 02:23:15,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:23:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:15,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:23:16,195 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128786609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:23:16,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:23:16,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 02:23:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960995809] [2024-11-09 02:23:16,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:23:16,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 02:23:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:23:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 02:23:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 02:23:16,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-11-09 02:23:16,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 51 transitions, 303 flow. Second operand has 49 states, 49 states have (on average 9.346938775510203) internal successors, (458), 49 states have internal predecessors, (458), 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) [2024-11-09 02:23:16,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:23:16,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-11-09 02:23:16,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:23:17,472 INFO L124 PetriNetUnfolderBase]: 382/785 cut-off events. [2024-11-09 02:23:17,473 INFO L125 PetriNetUnfolderBase]: For 31600/31600 co-relation queries the response was YES. [2024-11-09 02:23:17,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 785 events. 382/785 cut-off events. For 31600/31600 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2286 event pairs, 90 based on Foata normal form. 144/914 useless extension candidates. Maximal degree in co-relation 2679. Up to 235 conditions per place. [2024-11-09 02:23:17,480 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 207 selfloop transitions, 47 changer transitions 0/259 dead transitions. [2024-11-09 02:23:17,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 259 transitions, 1463 flow [2024-11-09 02:23:17,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 02:23:17,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2024-11-09 02:23:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 662 transitions. [2024-11-09 02:23:17,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34479166666666666 [2024-11-09 02:23:17,483 INFO L175 Difference]: Start difference. First operand has 88 places, 51 transitions, 303 flow. Second operand 48 states and 662 transitions. [2024-11-09 02:23:17,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 259 transitions, 1463 flow [2024-11-09 02:23:17,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 259 transitions, 1319 flow, removed 61 selfloop flow, removed 11 redundant places. [2024-11-09 02:23:17,498 INFO L231 Difference]: Finished difference. Result has 148 places, 75 transitions, 543 flow [2024-11-09 02:23:17,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=543, PETRI_PLACES=148, PETRI_TRANSITIONS=75} [2024-11-09 02:23:17,499 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 112 predicate places. [2024-11-09 02:23:17,499 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 75 transitions, 543 flow [2024-11-09 02:23:17,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 9.346938775510203) internal successors, (458), 49 states have internal predecessors, (458), 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) [2024-11-09 02:23:17,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:23:17,500 INFO L204 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:23:17,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 02:23:17,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:17,701 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:23:17,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:23:17,701 INFO L85 PathProgramCache]: Analyzing trace with hash 762234462, now seen corresponding path program 5 times [2024-11-09 02:23:17,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:23:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348368730] [2024-11-09 02:23:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:23:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:23:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:23:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:23:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:23:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348368730] [2024-11-09 02:23:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348368730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:23:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083347660] [2024-11-09 02:23:21,182 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:23:21,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:23:21,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:23:21,184 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:23:21,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process