./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.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/goblint-regression/28-race_reach_71-funloop_racing.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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:37:28,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:37:28,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:37:28,623 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:37:28,624 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:37:28,659 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:37:28,660 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:37:28,661 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:37:28,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:37:28,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:37:28,664 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:37:28,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:37:28,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:37:28,665 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:37:28,667 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:37:28,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:37:28,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:37:28,668 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:37:28,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:37:28,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:37:28,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:37:28,669 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:37:28,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:37:28,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:37:28,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:37:28,671 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:37:28,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:37:28,671 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:37:28,672 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:37:28,672 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:37:28,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:37:28,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:37:28,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:28,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:37:28,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:37:28,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:37:28,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:37:28,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:37:28,675 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:37:28,675 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:37:28,675 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:37:28,675 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:37:28,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-09 02:37:28,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:37:28,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:37:28,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:37:28,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:37:28,989 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:37:28,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-09 02:37:30,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:37:30,742 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:37:30,743 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-09 02:37:30,769 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e33baad/5e0f9d3cc25b4ed3aea648dd622f6a0a/FLAG8efc2000e [2024-11-09 02:37:30,785 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e33baad/5e0f9d3cc25b4ed3aea648dd622f6a0a [2024-11-09 02:37:30,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:37:30,788 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:37:30,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:30,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:37:30,797 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:37:30,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,800 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2527d94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:30, skipping insertion in model container [2024-11-09 02:37:30,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:37:30" (1/1) ... [2024-11-09 02:37:30,855 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:37:31,338 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/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2024-11-09 02:37:31,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:31,428 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:37:31,481 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/goblint-regression/28-race_reach_71-funloop_racing.i[41323,41336] [2024-11-09 02:37:31,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:37:31,567 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:37:31,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31 WrapperNode [2024-11-09 02:37:31,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:37:31,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:31,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:37:31,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:37:31,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,608 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,652 INFO L138 Inliner]: procedures = 272, calls = 107, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 338 [2024-11-09 02:37:31,656 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:37:31,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:37:31,657 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:37:31,657 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:37:31,669 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,709 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 75, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 7 writes are split as follows [0, 0, 6, 1]. [2024-11-09 02:37:31,711 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,711 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,724 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:37:31,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:37:31,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:37:31,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:37:31,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (1/1) ... [2024-11-09 02:37:31,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:37:31,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:31,787 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 02:37:31,789 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 02:37:31,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:37:31,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-09 02:37:31,838 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:37:31,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:37:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 02:37:31,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:37:31,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:37:31,840 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 02:37:32,032 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:37:32,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:37:32,470 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:37:32,471 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:37:32,937 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:37:32,938 INFO L316 CfgBuilder]: Removed 35 assume(true) statements. [2024-11-09 02:37:32,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:32 BoogieIcfgContainer [2024-11-09 02:37:32,938 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:37:32,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:37:32,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:37:32,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:37:32,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:37:30" (1/3) ... [2024-11-09 02:37:32,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baed5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:32, skipping insertion in model container [2024-11-09 02:37:32,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:37:31" (2/3) ... [2024-11-09 02:37:32,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3baed5a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:37:32, skipping insertion in model container [2024-11-09 02:37:32,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:37:32" (3/3) ... [2024-11-09 02:37:32,947 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-09 02:37:32,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:37:32,965 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-09 02:37:32,965 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:37:33,019 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-09 02:37:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 134 transitions, 275 flow [2024-11-09 02:37:33,137 INFO L124 PetriNetUnfolderBase]: 65/217 cut-off events. [2024-11-09 02:37:33,138 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:37:33,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 217 events. 65/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1025 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2024-11-09 02:37:33,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 134 transitions, 275 flow [2024-11-09 02:37:33,152 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 132 transitions, 268 flow [2024-11-09 02:37:33,164 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:33,175 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;@794d8d88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:33,175 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:37:33,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:33,187 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-11-09 02:37:33,187 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:33,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:33,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 02:37:33,189 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:33,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -681422255, now seen corresponding path program 1 times [2024-11-09 02:37:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96195264] [2024-11-09 02:37:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:33,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96195264] [2024-11-09 02:37:33,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96195264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:33,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:33,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712545098] [2024-11-09 02:37:33,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:33,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:33,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:33,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-11-09 02:37:33,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 132 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 02:37:33,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:33,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-11-09 02:37:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:34,076 INFO L124 PetriNetUnfolderBase]: 772/2151 cut-off events. [2024-11-09 02:37:34,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:34,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 2151 events. 772/2151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16040 event pairs, 630 based on Foata normal form. 528/2421 useless extension candidates. Maximal degree in co-relation 3478. Up to 1435 conditions per place. [2024-11-09 02:37:34,099 INFO L140 encePairwiseOnDemand]: 98/134 looper letters, 58 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-09 02:37:34,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 100 transitions, 324 flow [2024-11-09 02:37:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:34,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 214 transitions. [2024-11-09 02:37:34,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2024-11-09 02:37:34,116 INFO L175 Difference]: Start difference. First operand has 96 places, 132 transitions, 268 flow. Second operand 3 states and 214 transitions. [2024-11-09 02:37:34,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 100 transitions, 324 flow [2024-11-09 02:37:34,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 324 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:34,125 INFO L231 Difference]: Finished difference. Result has 99 places, 100 transitions, 214 flow [2024-11-09 02:37:34,127 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=99, PETRI_TRANSITIONS=100} [2024-11-09 02:37:34,131 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2024-11-09 02:37:34,131 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 214 flow [2024-11-09 02:37:34,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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 02:37:34,132 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:34,132 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:34,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:37:34,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:34,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1679642448, now seen corresponding path program 1 times [2024-11-09 02:37:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:34,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159015587] [2024-11-09 02:37:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:34,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159015587] [2024-11-09 02:37:34,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159015587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:34,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047442258] [2024-11-09 02:37:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:34,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:34,278 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 02:37:34,281 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 02:37:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:34,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:34,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:34,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047442258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:34,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:34,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966976600] [2024-11-09 02:37:34,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:34,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:34,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:34,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-11-09 02:37:34,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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 02:37:34,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:34,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-11-09 02:37:34,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:34,918 INFO L124 PetriNetUnfolderBase]: 772/2154 cut-off events. [2024-11-09 02:37:34,919 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:37:34,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3607 conditions, 2154 events. 772/2154 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16042 event pairs, 630 based on Foata normal form. 0/1896 useless extension candidates. Maximal degree in co-relation 3595. Up to 1435 conditions per place. [2024-11-09 02:37:34,932 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 58 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-11-09 02:37:34,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 103 transitions, 352 flow [2024-11-09 02:37:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 306 transitions. [2024-11-09 02:37:34,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3805970149253731 [2024-11-09 02:37:34,940 INFO L175 Difference]: Start difference. First operand has 99 places, 100 transitions, 214 flow. Second operand 6 states and 306 transitions. [2024-11-09 02:37:34,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 103 transitions, 352 flow [2024-11-09 02:37:34,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 103 transitions, 348 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:34,944 INFO L231 Difference]: Finished difference. Result has 106 places, 103 transitions, 246 flow [2024-11-09 02:37:34,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=106, PETRI_TRANSITIONS=103} [2024-11-09 02:37:34,946 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 10 predicate places. [2024-11-09 02:37:34,946 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 103 transitions, 246 flow [2024-11-09 02:37:34,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 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 02:37:34,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:34,950 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:34,971 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 02:37:35,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:35,158 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:35,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1397155311, now seen corresponding path program 2 times [2024-11-09 02:37:35,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:35,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431479428] [2024-11-09 02:37:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:35,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:35,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431479428] [2024-11-09 02:37:35,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431479428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:35,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565494164] [2024-11-09 02:37:35,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:35,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:35,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:35,299 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 02:37:35,301 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 02:37:35,412 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:35,412 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:35,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:35,415 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:35,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 02:37:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565494164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:35,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825695558] [2024-11-09 02:37:35,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:35,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:35,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 134 [2024-11-09 02:37:35,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 103 transitions, 246 flow. Second operand has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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 02:37:35,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:35,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 134 [2024-11-09 02:37:35,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:35,891 INFO L124 PetriNetUnfolderBase]: 772/2160 cut-off events. [2024-11-09 02:37:35,891 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-09 02:37:35,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 2160 events. 772/2160 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16071 event pairs, 630 based on Foata normal form. 6/1909 useless extension candidates. Maximal degree in co-relation 3586. Up to 1435 conditions per place. [2024-11-09 02:37:35,904 INFO L140 encePairwiseOnDemand]: 131/134 looper letters, 58 selfloop transitions, 11 changer transitions 0/109 dead transitions. [2024-11-09 02:37:35,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 420 flow [2024-11-09 02:37:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:35,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 555 transitions. [2024-11-09 02:37:35,908 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3451492537313433 [2024-11-09 02:37:35,908 INFO L175 Difference]: Start difference. First operand has 106 places, 103 transitions, 246 flow. Second operand 12 states and 555 transitions. [2024-11-09 02:37:35,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 420 flow [2024-11-09 02:37:35,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 109 transitions, 406 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:35,913 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 316 flow [2024-11-09 02:37:35,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=316, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2024-11-09 02:37:35,914 INFO L277 CegarLoopForPetriNet]: 96 programPoint places, 26 predicate places. [2024-11-09 02:37:35,914 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 316 flow [2024-11-09 02:37:35,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.30769230769231) internal successors, (537), 13 states have internal predecessors, (537), 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 02:37:35,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:35,915 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:35,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:36,119 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,SelfDestructingSolverStorable2 [2024-11-09 02:37:36,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-09 02:37:36,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -350764623, now seen corresponding path program 3 times [2024-11-09 02:37:36,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:36,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925531185] [2024-11-09 02:37:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:36,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:36,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:36,221 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:36,222 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:37:36,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:37:36,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:37:36,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:37:36,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:37:36,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:37:36,225 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:36,227 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:36,227 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:37:36,258 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 02:37:36,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 179 transitions, 374 flow [2024-11-09 02:37:36,286 INFO L124 PetriNetUnfolderBase]: 105/352 cut-off events. [2024-11-09 02:37:36,286 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-09 02:37:36,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 352 events. 105/352 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1887 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 219. Up to 12 conditions per place. [2024-11-09 02:37:36,290 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 179 transitions, 374 flow [2024-11-09 02:37:36,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 179 transitions, 374 flow [2024-11-09 02:37:36,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:36,300 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;@794d8d88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:36,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:37:36,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:36,307 INFO L124 PetriNetUnfolderBase]: 14/79 cut-off events. [2024-11-09 02:37:36,307 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:37:36,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:36,307 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:36,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:36,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:36,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1277556580, now seen corresponding path program 1 times [2024-11-09 02:37:36,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:36,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44812022] [2024-11-09 02:37:36,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:36,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:36,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44812022] [2024-11-09 02:37:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44812022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:36,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643416920] [2024-11-09 02:37:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:36,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:36,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-11-09 02:37:36,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 179 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:37:36,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:36,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-11-09 02:37:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:41,403 INFO L124 PetriNetUnfolderBase]: 29293/57078 cut-off events. [2024-11-09 02:37:41,403 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 02:37:41,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99046 conditions, 57078 events. 29293/57078 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578757 event pairs, 25003 based on Foata normal form. 15018/65101 useless extension candidates. Maximal degree in co-relation 80566. Up to 41865 conditions per place. [2024-11-09 02:37:41,779 INFO L140 encePairwiseOnDemand]: 132/179 looper letters, 81 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2024-11-09 02:37:41,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 136 transitions, 454 flow [2024-11-09 02:37:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:37:41,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:37:41,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2024-11-09 02:37:41,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5344506517690876 [2024-11-09 02:37:41,783 INFO L175 Difference]: Start difference. First operand has 130 places, 179 transitions, 374 flow. Second operand 3 states and 287 transitions. [2024-11-09 02:37:41,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 136 transitions, 454 flow [2024-11-09 02:37:41,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 136 transitions, 454 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:37:41,790 INFO L231 Difference]: Finished difference. Result has 133 places, 136 transitions, 298 flow [2024-11-09 02:37:41,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=133, PETRI_TRANSITIONS=136} [2024-11-09 02:37:41,791 INFO L277 CegarLoopForPetriNet]: 130 programPoint places, 3 predicate places. [2024-11-09 02:37:41,792 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 136 transitions, 298 flow [2024-11-09 02:37:41,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 02:37:41,792 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:41,792 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:41,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:37:41,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:41,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:41,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1010142160, now seen corresponding path program 1 times [2024-11-09 02:37:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:41,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593261493] [2024-11-09 02:37:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:41,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:41,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593261493] [2024-11-09 02:37:41,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593261493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:41,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385696453] [2024-11-09 02:37:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:41,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:41,875 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 02:37:41,882 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 02:37:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:41,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 02:37:41,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:42,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385696453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:42,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:42,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-09 02:37:42,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899654963] [2024-11-09 02:37:42,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:42,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:37:42,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:37:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 02:37:42,026 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-11-09 02:37:42,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 136 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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 02:37:42,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:42,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-11-09 02:37:42,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:45,879 INFO L124 PetriNetUnfolderBase]: 29293/57081 cut-off events. [2024-11-09 02:37:45,880 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-09 02:37:46,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99062 conditions, 57081 events. 29293/57081 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578812 event pairs, 25003 based on Foata normal form. 0/50086 useless extension candidates. Maximal degree in co-relation 99049. Up to 41865 conditions per place. [2024-11-09 02:37:46,496 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 81 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-11-09 02:37:46,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 139 transitions, 482 flow [2024-11-09 02:37:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:37:46,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:37:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2024-11-09 02:37:46,499 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3789571694599628 [2024-11-09 02:37:46,499 INFO L175 Difference]: Start difference. First operand has 133 places, 136 transitions, 298 flow. Second operand 6 states and 407 transitions. [2024-11-09 02:37:46,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 139 transitions, 482 flow [2024-11-09 02:37:46,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 139 transitions, 478 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:46,505 INFO L231 Difference]: Finished difference. Result has 140 places, 139 transitions, 330 flow [2024-11-09 02:37:46,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=140, PETRI_TRANSITIONS=139} [2024-11-09 02:37:46,507 INFO L277 CegarLoopForPetriNet]: 130 programPoint places, 10 predicate places. [2024-11-09 02:37:46,507 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 139 transitions, 330 flow [2024-11-09 02:37:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 54.714285714285715) internal successors, (383), 7 states have internal predecessors, (383), 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 02:37:46,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:46,508 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:46,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 02:37:46,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:46,709 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:46,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1650609564, now seen corresponding path program 2 times [2024-11-09 02:37:46,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:46,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751781379] [2024-11-09 02:37:46,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751781379] [2024-11-09 02:37:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751781379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:37:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415457318] [2024-11-09 02:37:46,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:37:46,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:46,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:37:46,841 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 02:37:46,843 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 02:37:46,949 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:37:46,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:37:46,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:37:46,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:37:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:46,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:37:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 02:37:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415457318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:37:47,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:37:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-09 02:37:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194456972] [2024-11-09 02:37:47,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:37:47,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 02:37:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 02:37:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:37:47,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 179 [2024-11-09 02:37:47,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 139 transitions, 330 flow. Second operand has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 02:37:47,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:47,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 179 [2024-11-09 02:37:47,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:37:50,960 INFO L124 PetriNetUnfolderBase]: 29293/57087 cut-off events. [2024-11-09 02:37:50,960 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-11-09 02:37:51,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99099 conditions, 57087 events. 29293/57087 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1794. Compared 578710 event pairs, 25003 based on Foata normal form. 6/50099 useless extension candidates. Maximal degree in co-relation 99040. Up to 41865 conditions per place. [2024-11-09 02:37:51,317 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 81 selfloop transitions, 11 changer transitions 0/145 dead transitions. [2024-11-09 02:37:51,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 145 transitions, 550 flow [2024-11-09 02:37:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 02:37:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-09 02:37:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 734 transitions. [2024-11-09 02:37:51,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34171322160148976 [2024-11-09 02:37:51,324 INFO L175 Difference]: Start difference. First operand has 140 places, 139 transitions, 330 flow. Second operand 12 states and 734 transitions. [2024-11-09 02:37:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 145 transitions, 550 flow [2024-11-09 02:37:51,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 145 transitions, 536 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-09 02:37:51,329 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 400 flow [2024-11-09 02:37:51,331 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=400, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2024-11-09 02:37:51,331 INFO L277 CegarLoopForPetriNet]: 130 programPoint places, 26 predicate places. [2024-11-09 02:37:51,332 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 400 flow [2024-11-09 02:37:51,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 54.38461538461539) internal successors, (707), 13 states have internal predecessors, (707), 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 02:37:51,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:51,333 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-11-09 02:37:51,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:37:51,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:37:51,534 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-09 02:37:51,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:51,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1779235556, now seen corresponding path program 3 times [2024-11-09 02:37:51,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942981215] [2024-11-09 02:37:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:51,571 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:37:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:37:51,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:37:51,613 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:37:51,614 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 02:37:51,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-09 02:37:51,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-09 02:37:51,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-09 02:37:51,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-09 02:37:51,616 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-09 02:37:51,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:37:51,616 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-11-09 02:37:51,617 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:37:51,617 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:37:51,667 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:37:51,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 224 transitions, 475 flow [2024-11-09 02:37:51,712 INFO L124 PetriNetUnfolderBase]: 148/498 cut-off events. [2024-11-09 02:37:51,713 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-09 02:37:51,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 498 events. 148/498 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2867 event pairs, 1 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 361. Up to 16 conditions per place. [2024-11-09 02:37:51,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 224 transitions, 475 flow [2024-11-09 02:37:51,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 224 transitions, 475 flow [2024-11-09 02:37:51,727 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:37:51,728 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;@794d8d88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:37:51,729 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-09 02:37:51,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:37:51,737 INFO L124 PetriNetUnfolderBase]: 16/96 cut-off events. [2024-11-09 02:37:51,737 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-09 02:37:51,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:37:51,737 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:37:51,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-09 02:37:51,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:37:51,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2071964589, now seen corresponding path program 1 times [2024-11-09 02:37:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:37:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121797886] [2024-11-09 02:37:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:37:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:37:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:37:51,782 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 02:37:51,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:37:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121797886] [2024-11-09 02:37:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121797886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:37:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:37:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:37:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295903049] [2024-11-09 02:37:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:37:51,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:37:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:37:51,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:37:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:37:51,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 224 [2024-11-09 02:37:51,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 224 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 02:37:51,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:37:51,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 224 [2024-11-09 02:37:51,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand