./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.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 7f19dc7b6c5c71a67d9914faaf2a1157355ecf0e14b05edf8c2541b2f25a5ffb --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:18:53,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:18:53,320 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:18:53,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:18:53,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:18:53,378 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:18:53,379 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:18:53,379 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:18:53,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:18:53,382 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:18:53,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:18:53,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:18:53,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:18:53,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:18:53,385 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:18:53,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:18:53,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:18:53,385 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:18:53,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:18:53,386 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:18:53,386 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:18:53,386 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:18:53,387 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:18:53,388 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:18:53,388 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:18:53,389 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:18:53,389 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:18:53,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:53,389 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:18:53,390 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:18:53,390 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:18:53,390 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:18:53,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:18:53,390 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:18:53,391 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:18:53,391 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:18:53,391 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:18:53,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:18:53,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f19dc7b6c5c71a67d9914faaf2a1157355ecf0e14b05edf8c2541b2f25a5ffb [2024-06-27 16:18:53,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:18:53,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:18:53,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:18:53,630 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:18:53,631 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:18:53,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-06-27 16:18:54,661 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:18:54,897 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:18:54,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-06-27 16:18:54,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5318af8f/f56e350b40b54327a84742da52f59d16/FLAG334d29327 [2024-06-27 16:18:54,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5318af8f/f56e350b40b54327a84742da52f59d16 [2024-06-27 16:18:54,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:18:54,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:18:54,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:54,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:18:54,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:18:54,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:54" (1/1) ... [2024-06-27 16:18:54,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549824e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:54, skipping insertion in model container [2024-06-27 16:18:54,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:54" (1/1) ... [2024-06-27 16:18:54,968 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:18:55,198 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i[30745,30758] [2024-06-27 16:18:55,214 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i[31120,31133] [2024-06-27 16:18:55,224 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:55,236 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:18:55,300 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i[30745,30758] [2024-06-27 16:18:55,305 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i[31120,31133] [2024-06-27 16:18:55,308 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:55,341 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:18:55,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55 WrapperNode [2024-06-27 16:18:55,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:55,343 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:55,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:18:55,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:18:55,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,392 INFO L138 Inliner]: procedures = 164, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 97 [2024-06-27 16:18:55,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:55,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:18:55,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:18:55,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:18:55,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,423 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-06-27 16:18:55,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,429 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,433 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:18:55,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:18:55,449 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:18:55,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:18:55,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (1/1) ... [2024-06-27 16:18:55,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:55,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:55,493 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) [2024-06-27 16:18:55,511 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 [2024-06-27 16:18:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-06-27 16:18:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-06-27 16:18:55,534 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-27 16:18:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:18:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:18:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:18:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-27 16:18:55,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:18:55,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:18:55,537 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:18:55,651 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:18:55,652 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:18:55,789 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:18:55,789 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:18:55,884 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:18:55,884 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-06-27 16:18:55,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:55 BoogieIcfgContainer [2024-06-27 16:18:55,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:18:55,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:18:55,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:18:55,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:18:55,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:18:54" (1/3) ... [2024-06-27 16:18:55,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:55, skipping insertion in model container [2024-06-27 16:18:55,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:55" (2/3) ... [2024-06-27 16:18:55,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3329895d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:55, skipping insertion in model container [2024-06-27 16:18:55,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:55" (3/3) ... [2024-06-27 16:18:55,891 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec-pthread.i [2024-06-27 16:18:55,897 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:18:55,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:18:55,906 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 16:18:55,906 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:18:55,949 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:18:55,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 44 transitions, 92 flow [2024-06-27 16:18:56,000 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-06-27 16:18:56,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:18:56,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 46 events. 5/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-06-27 16:18:56,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 44 transitions, 92 flow [2024-06-27 16:18:56,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 44 transitions, 92 flow [2024-06-27 16:18:56,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:56,018 INFO L357 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, mHoare=true, 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;@42d8c53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:56,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 16:18:56,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:56,028 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-06-27 16:18:56,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 16:18:56,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:56,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-06-27 16:18:56,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-06-27 16:18:56,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash -87045040, now seen corresponding path program 1 times [2024-06-27 16:18:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:56,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697773077] [2024-06-27 16:18:56,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:56,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 16:18:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 16:18:56,150 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 16:18:56,151 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-06-27 16:18:56,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-06-27 16:18:56,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-27 16:18:56,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-06-27 16:18:56,153 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-06-27 16:18:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:18:56,153 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 16:18:56,156 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 16:18:56,156 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-06-27 16:18:56,205 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:18:56,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 83 transitions, 176 flow [2024-06-27 16:18:56,230 INFO L124 PetriNetUnfolderBase]: 10/88 cut-off events. [2024-06-27 16:18:56,231 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:18:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 88 events. 10/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 297 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2024-06-27 16:18:56,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 83 transitions, 176 flow [2024-06-27 16:18:56,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 83 transitions, 176 flow [2024-06-27 16:18:56,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:56,245 INFO L357 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, mHoare=true, 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;@42d8c53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:56,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 16:18:56,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:56,258 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-27 16:18:56,258 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 16:18:56,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:56,259 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-06-27 16:18:56,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:56,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:56,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1893380711, now seen corresponding path program 1 times [2024-06-27 16:18:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745363490] [2024-06-27 16:18:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 16:18:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 16:18:56,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 16:18:56,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-06-27 16:18:56,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 16:18:56,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2024-06-27 16:18:56,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 16:18:56,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2024-06-27 16:18:56,350 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-06-27 16:18:56,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 16:18:56,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:18:56,351 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 16:18:56,352 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 16:18:56,352 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-06-27 16:18:56,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:18:56,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 122 transitions, 262 flow [2024-06-27 16:18:56,465 INFO L124 PetriNetUnfolderBase]: 15/130 cut-off events. [2024-06-27 16:18:56,465 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 16:18:56,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 130 events. 15/130 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 539 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2024-06-27 16:18:56,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 122 transitions, 262 flow [2024-06-27 16:18:56,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 122 transitions, 262 flow [2024-06-27 16:18:56,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:56,477 INFO L357 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, mHoare=true, 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;@42d8c53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:56,478 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 16:18:56,494 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:56,496 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2024-06-27 16:18:56,499 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 16:18:56,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:56,500 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-06-27 16:18:56,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2024-06-27 16:18:56,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1687581039, now seen corresponding path program 1 times [2024-06-27 16:18:56,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:56,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895392924] [2024-06-27 16:18:56,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 16:18:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 16:18:56,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 16:18:56,556 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 16:18:56,556 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-06-27 16:18:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2024-06-27 16:18:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2024-06-27 16:18:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2024-06-27 16:18:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2024-06-27 16:18:56,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2024-06-27 16:18:56,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2024-06-27 16:18:56,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-06-27 16:18:56,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2024-06-27 16:18:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:18:56,559 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-06-27 16:18:56,560 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-06-27 16:18:56,561 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-06-27 16:18:56,618 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 16:18:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 161 transitions, 350 flow [2024-06-27 16:18:56,661 INFO L124 PetriNetUnfolderBase]: 20/172 cut-off events. [2024-06-27 16:18:56,661 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-06-27 16:18:56,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 172 events. 20/172 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 781 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 155. Up to 5 conditions per place. [2024-06-27 16:18:56,665 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 161 transitions, 350 flow [2024-06-27 16:18:56,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 161 transitions, 350 flow [2024-06-27 16:18:56,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:56,675 INFO L357 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, mHoare=true, 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;@42d8c53c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:56,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 16:18:56,688 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:56,688 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2024-06-27 16:18:56,688 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-06-27 16:18:56,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:56,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:56,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2024-06-27 16:18:56,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 299016721, now seen corresponding path program 1 times [2024-06-27 16:18:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:56,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909446360] [2024-06-27 16:18:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:56,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:56,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909446360] [2024-06-27 16:18:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909446360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:56,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 16:18:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770070302] [2024-06-27 16:18:56,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:56,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:18:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:18:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:18:56,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 161 [2024-06-27 16:18:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 161 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-06-27 16:18:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 161 [2024-06-27 16:18:56,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand