/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix053.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:50:40,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:50:40,348 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:50:40,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:50:40,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:50:40,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:50:40,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:50:40,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:50:40,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:50:40,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:50:40,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:50:40,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:50:40,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:50:40,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:50:40,367 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:50:40,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:50:40,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:50:40,368 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:50:40,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:50:40,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:50:40,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:50:40,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:50:40,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:50:40,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:50:40,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:50:40,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:50:40,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:50:40,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:50:40,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:50:40,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:50:40,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:50:40,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:50:40,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:50:40,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:50:40,371 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:50:40,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:50:40,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:50:40,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:50:40,372 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:50:40,372 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:50:40,372 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:50:40,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:50:40,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:50:40,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:50:40,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:50:40,530 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:50:40,530 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:50:40,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix053.opt_bound2.i [2023-08-03 23:50:41,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:50:41,858 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:50:41,858 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix053.opt_bound2.i [2023-08-03 23:50:41,867 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a74697a/6bc7e1eb3bf44beaa02f0d11375e54cd/FLAG95aa55b2c [2023-08-03 23:50:41,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3a74697a/6bc7e1eb3bf44beaa02f0d11375e54cd [2023-08-03 23:50:41,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:50:41,882 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:50:41,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:50:41,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:50:41,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:50:41,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:50:41" (1/1) ... [2023-08-03 23:50:41,889 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647e8ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:41, skipping insertion in model container [2023-08-03 23:50:41,889 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:50:41" (1/1) ... [2023-08-03 23:50:41,921 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:50:42,024 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix053.opt_bound2.i[944,957] [2023-08-03 23:50:42,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:50:42,183 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:50:42,190 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix053.opt_bound2.i[944,957] [2023-08-03 23:50:42,206 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:50:42,207 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:50:42,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:50:42,270 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:50:42,270 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:50:42,275 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:50:42,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42 WrapperNode [2023-08-03 23:50:42,275 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:50:42,276 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:50:42,276 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:50:42,276 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:50:42,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,294 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,317 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 175 [2023-08-03 23:50:42,318 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:50:42,318 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:50:42,318 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:50:42,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:50:42,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,339 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:50:42,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:50:42,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:50:42,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:50:42,344 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (1/1) ... [2023-08-03 23:50:42,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:50:42,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:50:42,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 23:50:42,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 23:50:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:50:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:50:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:50:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:50:42,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:50:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:50:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:50:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:50:42,440 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:50:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:50:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:50:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:50:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:50:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:50:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:50:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:50:42,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:50:42,442 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 23:50:42,553 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:50:42,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:50:42,775 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:50:42,834 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:50:42,834 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:50:42,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:50:42 BoogieIcfgContainer [2023-08-03 23:50:42,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:50:42,837 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:50:42,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:50:42,839 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:50:42,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:50:41" (1/3) ... [2023-08-03 23:50:42,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c96ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:50:42, skipping insertion in model container [2023-08-03 23:50:42,840 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:50:42" (2/3) ... [2023-08-03 23:50:42,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c96ca1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:50:42, skipping insertion in model container [2023-08-03 23:50:42,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:50:42" (3/3) ... [2023-08-03 23:50:42,841 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix053.opt_bound2.i [2023-08-03 23:50:42,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:50:42,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:50:42,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:50:42,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:50:42,889 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:50:42,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 153 transitions, 326 flow [2023-08-03 23:50:43,123 INFO L124 PetriNetUnfolderBase]: 62/923 cut-off events. [2023-08-03 23:50:43,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:50:43,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 923 events. 62/923 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5693 event pairs, 0 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 544. Up to 32 conditions per place. [2023-08-03 23:50:43,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 153 transitions, 326 flow [2023-08-03 23:50:43,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 122 transitions, 264 flow [2023-08-03 23:50:43,141 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:50:43,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 122 transitions, 264 flow [2023-08-03 23:50:43,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 122 transitions, 264 flow [2023-08-03 23:50:43,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 122 transitions, 264 flow [2023-08-03 23:50:43,186 INFO L124 PetriNetUnfolderBase]: 14/427 cut-off events. [2023-08-03 23:50:43,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:50:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 427 events. 14/427 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1958 event pairs, 0 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-03 23:50:43,192 INFO L119 LiptonReduction]: Number of co-enabled transitions 2104 [2023-08-03 23:50:45,799 INFO L134 LiptonReduction]: Checked pairs total: 4995 [2023-08-03 23:50:45,800 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-03 23:50:45,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:50:45,812 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=LoopsAndPotentialCycles, 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;@2d1eec38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:50:45,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:50:45,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:50:45,815 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:50:45,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:50:45,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:50:45,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:50:45,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:50:45,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:50:45,819 INFO L85 PathProgramCache]: Analyzing trace with hash 399039766, now seen corresponding path program 1 times [2023-08-03 23:50:45,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:50:45,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450874719] [2023-08-03 23:50:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:50:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:50:45,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:50:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:50:45,943 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:50:45,944 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:50:45,945 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:50:45,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:50:45,946 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:50:45,947 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:50:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:50:45,947 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:50:45,949 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:50:45,949 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:50:45,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:50:45,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:50:45,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 183 transitions, 414 flow [2023-08-03 23:50:46,317 INFO L124 PetriNetUnfolderBase]: 282/4295 cut-off events. [2023-08-03 23:50:46,317 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:50:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4584 conditions, 4295 events. 282/4295 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 41731 event pairs, 0 based on Foata normal form. 0/3758 useless extension candidates. Maximal degree in co-relation 3090. Up to 162 conditions per place. [2023-08-03 23:50:46,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 183 transitions, 414 flow [2023-08-03 23:50:46,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 152 transitions, 352 flow [2023-08-03 23:50:46,335 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:50:46,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 152 transitions, 352 flow [2023-08-03 23:50:46,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 152 transitions, 352 flow [2023-08-03 23:50:46,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 152 transitions, 352 flow [2023-08-03 23:50:46,476 INFO L124 PetriNetUnfolderBase]: 39/1784 cut-off events. [2023-08-03 23:50:46,476 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:50:46,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2073 conditions, 1784 events. 39/1784 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14135 event pairs, 0 based on Foata normal form. 0/1652 useless extension candidates. Maximal degree in co-relation 1416. Up to 81 conditions per place. [2023-08-03 23:50:46,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 5756 [2023-08-03 23:50:49,346 INFO L134 LiptonReduction]: Checked pairs total: 15246 [2023-08-03 23:50:49,346 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-03 23:50:49,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:50:49,348 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=LoopsAndPotentialCycles, 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;@2d1eec38, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:50:49,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:50:49,356 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:50:49,356 INFO L124 PetriNetUnfolderBase]: 0/94 cut-off events. [2023-08-03 23:50:49,356 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 23:50:49,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:50:49,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:50:49,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:50:49,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:50:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1839724908, now seen corresponding path program 1 times [2023-08-03 23:50:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:50:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767691096] [2023-08-03 23:50:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:50:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:50:49,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:50:49,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767691096] [2023-08-03 23:50:49,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767691096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:50:49,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:50:49,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:50:49,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109610247] [2023-08-03 23:50:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:50:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:50:49,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:50:49,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:50:49,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:50:49,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 288 [2023-08-03 23:50:49,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-08-03 23:50:49,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:50:49,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 288 [2023-08-03 23:50:49,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:52:23,160 INFO L124 PetriNetUnfolderBase]: 947916/1189384 cut-off events. [2023-08-03 23:52:23,160 INFO L125 PetriNetUnfolderBase]: For 56052/56052 co-relation queries the response was YES. [2023-08-03 23:52:26,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411457 conditions, 1189384 events. 947916/1189384 cut-off events. For 56052/56052 co-relation queries the response was YES. Maximal size of possible extension queue 27000. Compared 8028264 event pairs, 807918 based on Foata normal form. 0/1101595 useless extension candidates. Maximal degree in co-relation 710480. Up to 1157914 conditions per place.