./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/02_inc_cas.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-ext/02_inc_cas.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 ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:24:26,385 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:24:26,444 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:24:26,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:24:26,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:24:26,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:24:26,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:24:26,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:24:26,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:24:26,477 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:24:26,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:24:26,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:24:26,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:24:26,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:24:26,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:24:26,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:24:26,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:24:26,481 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:24:26,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:24:26,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:24:26,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:24:26,482 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:24:26,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:24:26,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:24:26,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:24:26,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:24:26,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:24:26,483 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:24:26,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:24:26,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:24:26,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:24:26,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:24:26,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:26,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:24:26,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:24:26,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:24:26,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:24:26,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:24:26,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:24:26,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:24:26,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:24:26,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:24:26,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2024-11-09 02:24:26,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:24:26,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:24:26,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:24:26,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:24:26,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:24:26,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-09 02:24:28,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:24:28,469 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:24:28,470 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-09 02:24:28,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81eb27b57/954ec82b1ad248d395403ba14f1eaba6/FLAGbe72a6cac [2024-11-09 02:24:28,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81eb27b57/954ec82b1ad248d395403ba14f1eaba6 [2024-11-09 02:24:28,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:24:28,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:24:28,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:28,499 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:24:28,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:24:28,507 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2719291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28, skipping insertion in model container [2024-11-09 02:24:28,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,539 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:24:28,806 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-ext/02_inc_cas.i[30873,30886] [2024-11-09 02:24:28,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:28,820 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:24:28,855 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-ext/02_inc_cas.i[30873,30886] [2024-11-09 02:24:28,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:24:28,888 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:24:28,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28 WrapperNode [2024-11-09 02:24:28,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:24:28,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:28,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:24:28,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:24:28,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,910 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,927 INFO L138 Inliner]: procedures = 170, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-11-09 02:24:28,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:24:28,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:24:28,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:24:28,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:24:28,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:28,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,023 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 3 writes are split as follows [0, 1, 2]. [2024-11-09 02:24:29,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,028 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:24:29,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:24:29,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:24:29,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:24:29,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (1/1) ... [2024-11-09 02:24:29,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:24:29,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:24:29,064 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 02:24:29,066 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 02:24:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:24:29,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:24:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 02:24:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 02:24:29,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 02:24:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:24:29,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:24:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 02:24:29,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:24:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 02:24:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 02:24:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:24:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:24:29,108 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 02:24:29,220 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:24:29,222 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:24:29,345 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:24:29,345 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:24:29,434 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:24:29,435 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 02:24:29,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:29 BoogieIcfgContainer [2024-11-09 02:24:29,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:24:29,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:24:29,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:24:29,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:24:29,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:24:28" (1/3) ... [2024-11-09 02:24:29,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b98f954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:29, skipping insertion in model container [2024-11-09 02:24:29,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:24:28" (2/3) ... [2024-11-09 02:24:29,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b98f954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:24:29, skipping insertion in model container [2024-11-09 02:24:29,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:24:29" (3/3) ... [2024-11-09 02:24:29,442 INFO L112 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2024-11-09 02:24:29,456 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:24:29,456 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:24:29,456 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:24:29,498 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 19 transitions, 42 flow [2024-11-09 02:24:29,549 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-09 02:24:29,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:24:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 37 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2024-11-09 02:24:29,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 19 transitions, 42 flow [2024-11-09 02:24:29,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 19 transitions, 42 flow [2024-11-09 02:24:29,562 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:29,567 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;@79a1902c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:29,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 02:24:29,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:29,572 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-09 02:24:29,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 02:24:29,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:29,573 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 02:24:29,573 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 02:24:29,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1819143956, now seen corresponding path program 1 times [2024-11-09 02:24:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977217498] [2024-11-09 02:24:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:29,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:29,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:29,747 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:29,750 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 02:24:29,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 02:24:29,752 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-09 02:24:29,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:24:29,753 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 02:24:29,757 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:29,757 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 02:24:29,787 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:29,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 76 flow [2024-11-09 02:24:29,802 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-09 02:24:29,804 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 02:24:29,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2024-11-09 02:24:29,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 33 transitions, 76 flow [2024-11-09 02:24:29,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 33 transitions, 76 flow [2024-11-09 02:24:29,809 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:29,810 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;@79a1902c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:29,810 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:24:29,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:29,816 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 02:24:29,816 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:24:29,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:29,816 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 02:24:29,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:24:29,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1499154230, now seen corresponding path program 1 times [2024-11-09 02:24:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:29,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472328423] [2024-11-09 02:24:29,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:29,916 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 02:24:29,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:29,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472328423] [2024-11-09 02:24:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472328423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:29,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:24:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022292033] [2024-11-09 02:24:29,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:29,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:24:29,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:24:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:24:29,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-09 02:24:29,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:24:29,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:29,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-09 02:24:29,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:30,114 INFO L124 PetriNetUnfolderBase]: 490/822 cut-off events. [2024-11-09 02:24:30,115 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-09 02:24:30,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1617 conditions, 822 events. 490/822 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3302 event pairs, 376 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 1143. Up to 763 conditions per place. [2024-11-09 02:24:30,122 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 25 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2024-11-09 02:24:30,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 120 flow [2024-11-09 02:24:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:24:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:24:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 38 transitions. [2024-11-09 02:24:30,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-11-09 02:24:30,133 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 76 flow. Second operand 2 states and 38 transitions. [2024-11-09 02:24:30,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 120 flow [2024-11-09 02:24:30,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:30,136 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 70 flow [2024-11-09 02:24:30,138 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-09 02:24:30,141 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2024-11-09 02:24:30,141 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 70 flow [2024-11-09 02:24:30,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 02:24:30,142 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:30,142 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 02:24:30,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:24:30,142 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 02:24:30,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1234324536, now seen corresponding path program 1 times [2024-11-09 02:24:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173249211] [2024-11-09 02:24:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:30,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:30,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:30,212 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:30,212 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 02:24:30,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-09 02:24:30,212 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-09 02:24:30,213 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-09 02:24:30,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:24:30,213 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 02:24:30,213 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:30,214 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 02:24:30,236 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:30,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2024-11-09 02:24:30,243 INFO L124 PetriNetUnfolderBase]: 9/55 cut-off events. [2024-11-09 02:24:30,243 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-09 02:24:30,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 9/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 140 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2024-11-09 02:24:30,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 47 transitions, 112 flow [2024-11-09 02:24:30,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-11-09 02:24:30,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:30,246 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;@79a1902c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:30,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 02:24:30,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:30,247 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 02:24:30,248 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:24:30,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:30,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 02:24:30,248 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:24:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -108344515, now seen corresponding path program 1 times [2024-11-09 02:24:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:30,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738854371] [2024-11-09 02:24:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:30,289 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 02:24:30,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:30,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738854371] [2024-11-09 02:24:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738854371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:30,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:24:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497911233] [2024-11-09 02:24:30,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:30,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:24:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:24:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:24:30,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 47 [2024-11-09 02:24:30,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 02:24:30,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 47 [2024-11-09 02:24:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:31,114 INFO L124 PetriNetUnfolderBase]: 7132/10110 cut-off events. [2024-11-09 02:24:31,115 INFO L125 PetriNetUnfolderBase]: For 563/563 co-relation queries the response was YES. [2024-11-09 02:24:31,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20059 conditions, 10110 events. 7132/10110 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 50495 event pairs, 5560 based on Foata normal form. 0/7656 useless extension candidates. Maximal degree in co-relation 4545. Up to 9592 conditions per place. [2024-11-09 02:24:31,172 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 36 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2024-11-09 02:24:31,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 43 transitions, 176 flow [2024-11-09 02:24:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:24:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:24:31,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-09 02:24:31,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-09 02:24:31,173 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 2 states and 54 transitions. [2024-11-09 02:24:31,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 43 transitions, 176 flow [2024-11-09 02:24:31,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:31,175 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 102 flow [2024-11-09 02:24:31,176 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-09 02:24:31,177 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-11-09 02:24:31,178 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 102 flow [2024-11-09 02:24:31,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 02:24:31,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:31,178 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:31,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:24:31,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:24:31,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1457386104, now seen corresponding path program 1 times [2024-11-09 02:24:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573934198] [2024-11-09 02:24:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:31,619 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 02:24:31,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:31,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573934198] [2024-11-09 02:24:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573934198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:24:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281056654] [2024-11-09 02:24:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:31,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:24:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:24:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:24:31,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 47 [2024-11-09 02:24:31,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 02:24:31,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:31,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 47 [2024-11-09 02:24:31,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:33,182 INFO L124 PetriNetUnfolderBase]: 13598/19312 cut-off events. [2024-11-09 02:24:33,182 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2024-11-09 02:24:33,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38269 conditions, 19312 events. 13598/19312 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 108691 event pairs, 2539 based on Foata normal form. 0/15124 useless extension candidates. Maximal degree in co-relation 38263. Up to 8176 conditions per place. [2024-11-09 02:24:33,274 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 127 selfloop transitions, 13 changer transitions 0/146 dead transitions. [2024-11-09 02:24:33,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 146 transitions, 628 flow [2024-11-09 02:24:33,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:24:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:24:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-11-09 02:24:33,276 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-11-09 02:24:33,276 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 102 flow. Second operand 6 states and 177 transitions. [2024-11-09 02:24:33,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 146 transitions, 628 flow [2024-11-09 02:24:33,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 146 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:33,283 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 186 flow [2024-11-09 02:24:33,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2024-11-09 02:24:33,285 INFO L277 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-11-09 02:24:33,286 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 186 flow [2024-11-09 02:24:33,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 02:24:33,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:33,286 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 02:24:33,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 02:24:33,286 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 02:24:33,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1670624461, now seen corresponding path program 1 times [2024-11-09 02:24:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650932214] [2024-11-09 02:24:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:33,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 02:24:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 02:24:33,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-09 02:24:33,320 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 02:24:33,320 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 02:24:33,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 02:24:33,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 02:24:33,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 02:24:33,320 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 02:24:33,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 02:24:33,321 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-09 02:24:33,321 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 02:24:33,321 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 02:24:33,348 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 02:24:33,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 150 flow [2024-11-09 02:24:33,353 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2024-11-09 02:24:33,354 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-09 02:24:33,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 72 events. 12/72 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 187 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 67. Up to 5 conditions per place. [2024-11-09 02:24:33,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 61 transitions, 150 flow [2024-11-09 02:24:33,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 61 transitions, 150 flow [2024-11-09 02:24:33,355 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:24:33,356 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;@79a1902c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:24:33,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 02:24:33,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:24:33,357 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-09 02:24:33,357 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-09 02:24:33,357 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:33,357 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 02:24:33,358 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:24:33,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1696646493, now seen corresponding path program 1 times [2024-11-09 02:24:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460781626] [2024-11-09 02:24:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:33,367 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 02:24:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460781626] [2024-11-09 02:24:33,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460781626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:33,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:33,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:24:33,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670512547] [2024-11-09 02:24:33,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:33,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 02:24:33,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 02:24:33,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 02:24:33,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 61 [2024-11-09 02:24:33,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 02:24:33,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:33,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 61 [2024-11-09 02:24:33,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:40,913 INFO L124 PetriNetUnfolderBase]: 88780/115578 cut-off events. [2024-11-09 02:24:40,914 INFO L125 PetriNetUnfolderBase]: For 8840/8840 co-relation queries the response was YES. [2024-11-09 02:24:41,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230504 conditions, 115578 events. 88780/115578 cut-off events. For 8840/8840 co-relation queries the response was YES. Maximal size of possible extension queue 2633. Compared 648498 event pairs, 69712 based on Foata normal form. 0/86097 useless extension candidates. Maximal degree in co-relation 20145. Up to 110923 conditions per place. [2024-11-09 02:24:41,557 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 47 selfloop transitions, 0 changer transitions 0/56 dead transitions. [2024-11-09 02:24:41,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 234 flow [2024-11-09 02:24:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 02:24:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-09 02:24:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 70 transitions. [2024-11-09 02:24:41,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5737704918032787 [2024-11-09 02:24:41,560 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 150 flow. Second operand 2 states and 70 transitions. [2024-11-09 02:24:41,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 234 flow [2024-11-09 02:24:41,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:41,570 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 134 flow [2024-11-09 02:24:41,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=134, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-11-09 02:24:41,571 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 0 predicate places. [2024-11-09 02:24:41,572 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 134 flow [2024-11-09 02:24:41,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 02:24:41,572 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:41,572 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:41,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 02:24:41,572 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:24:41,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1261658344, now seen corresponding path program 1 times [2024-11-09 02:24:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588851625] [2024-11-09 02:24:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:41,809 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 02:24:41,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:41,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588851625] [2024-11-09 02:24:41,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588851625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:41,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:41,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:24:41,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219390449] [2024-11-09 02:24:41,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:41,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:24:41,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:41,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:24:41,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:24:41,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:24:41,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 02:24:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:41,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:24:41,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:24:54,829 INFO L124 PetriNetUnfolderBase]: 172436/224476 cut-off events. [2024-11-09 02:24:54,830 INFO L125 PetriNetUnfolderBase]: For 5321/5321 co-relation queries the response was YES. [2024-11-09 02:24:55,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445970 conditions, 224476 events. 172436/224476 cut-off events. For 5321/5321 co-relation queries the response was YES. Maximal size of possible extension queue 5237. Compared 1376246 event pairs, 31567 based on Foata normal form. 0/171832 useless extension candidates. Maximal degree in co-relation 445963. Up to 98389 conditions per place. [2024-11-09 02:24:56,031 INFO L140 encePairwiseOnDemand]: 51/61 looper letters, 179 selfloop transitions, 16 changer transitions 0/203 dead transitions. [2024-11-09 02:24:56,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 203 transitions, 878 flow [2024-11-09 02:24:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 02:24:56,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 02:24:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2024-11-09 02:24:56,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-09 02:24:56,033 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 134 flow. Second operand 6 states and 244 transitions. [2024-11-09 02:24:56,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 203 transitions, 878 flow [2024-11-09 02:24:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 203 transitions, 878 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 02:24:56,042 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 239 flow [2024-11-09 02:24:56,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2024-11-09 02:24:56,043 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-11-09 02:24:56,045 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 239 flow [2024-11-09 02:24:56,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 02:24:56,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:24:56,046 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:24:56,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 02:24:56,046 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 02:24:56,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:24:56,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1011126353, now seen corresponding path program 1 times [2024-11-09 02:24:56,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:24:56,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545658906] [2024-11-09 02:24:56,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:24:56,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:24:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:24:56,245 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 02:24:56,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:24:56,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545658906] [2024-11-09 02:24:56,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545658906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:24:56,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:24:56,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 02:24:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243068560] [2024-11-09 02:24:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:24:56,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 02:24:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:24:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 02:24:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 02:24:56,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 61 [2024-11-09 02:24:56,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:24:56,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:24:56,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 61 [2024-11-09 02:24:56,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand