/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_mix036_power.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:37:41,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:37:41,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:37:41,670 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:37:41,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:37:41,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:37:41,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:37:41,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:37:41,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:37:41,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:37:41,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:37:41,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:37:41,690 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:37:41,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:37:41,691 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:37:41,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:37:41,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:37:41,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:37:41,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:37:41,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:37:41,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:37:41,697 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:37:41,697 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:37:41,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:37:41,701 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:37:41,701 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:37:41,701 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:37:41,702 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:37:41,702 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:37:41,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:37:41,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:37:41,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:37:41,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:37:41,703 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:37:41,704 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:37:41,704 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:37:41,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:37:41,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:37:41,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:37:41,902 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:37:41,903 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:37:41,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix036_power.opt_rmo.opt_bound2.i [2023-08-03 23:37:42,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:37:43,062 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:37:43,063 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix036_power.opt_rmo.opt_bound2.i [2023-08-03 23:37:43,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7143883e/d6402669c3e844e8ae72b68d1daede77/FLAG12fd4a42a [2023-08-03 23:37:43,084 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7143883e/d6402669c3e844e8ae72b68d1daede77 [2023-08-03 23:37:43,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:37:43,086 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:37:43,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:37:43,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:37:43,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:37:43,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0242f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43, skipping insertion in model container [2023-08-03 23:37:43,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,121 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:37:43,248 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_mix036_power.opt_rmo.opt_bound2.i[958,971] [2023-08-03 23:37:43,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:37:43,423 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:37:43,430 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_mix036_power.opt_rmo.opt_bound2.i[958,971] [2023-08-03 23:37:43,434 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:37:43,435 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:37:43,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:37:43,471 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:37:43,471 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:37:43,476 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:37:43,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43 WrapperNode [2023-08-03 23:37:43,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:37:43,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:37:43,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:37:43,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:37:43,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,535 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2023-08-03 23:37:43,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:37:43,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:37:43,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:37:43,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:37:43,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:37:43,575 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:37:43,575 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:37:43,575 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:37:43,576 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (1/1) ... [2023-08-03 23:37:43,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:37:43,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:37:43,604 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 23:37:43,618 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 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:37:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:37:43,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:37:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:37:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:37:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:37:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:37:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:37:43,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:37:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:37:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:37:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:37:43,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:37:43,630 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 23:37:43,729 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:37:43,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:37:43,952 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:37:44,011 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:37:44,012 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:37:44,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:37:44 BoogieIcfgContainer [2023-08-03 23:37:44,013 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:37:44,014 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:37:44,015 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:37:44,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:37:44,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:37:43" (1/3) ... [2023-08-03 23:37:44,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:37:44, skipping insertion in model container [2023-08-03 23:37:44,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:37:43" (2/3) ... [2023-08-03 23:37:44,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230797ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:37:44, skipping insertion in model container [2023-08-03 23:37:44,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:37:44" (3/3) ... [2023-08-03 23:37:44,018 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix036_power.opt_rmo.opt_bound2.i [2023-08-03 23:37:44,023 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:37:44,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:37:44,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:37:44,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:37:44,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:37:44,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 160 transitions, 340 flow [2023-08-03 23:37:44,250 INFO L124 PetriNetUnfolderBase]: 62/943 cut-off events. [2023-08-03 23:37:44,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:37:44,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 943 events. 62/943 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5844 event pairs, 0 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 556. Up to 32 conditions per place. [2023-08-03 23:37:44,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 160 transitions, 340 flow [2023-08-03 23:37:44,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 129 transitions, 278 flow [2023-08-03 23:37:44,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:37:44,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-03 23:37:44,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 129 transitions, 278 flow [2023-08-03 23:37:44,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 129 transitions, 278 flow [2023-08-03 23:37:44,306 INFO L124 PetriNetUnfolderBase]: 14/447 cut-off events. [2023-08-03 23:37:44,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:37:44,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 447 events. 14/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2066 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 308. Up to 16 conditions per place. [2023-08-03 23:37:44,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 2344 [2023-08-03 23:37:47,394 INFO L134 LiptonReduction]: Checked pairs total: 5188 [2023-08-03 23:37:47,394 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-03 23:37:47,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:37:47,407 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;@7edbd7b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:37:47,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:37:47,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:37:47,410 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:37:47,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:37:47,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:37:47,410 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:37:47,411 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:37:47,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:37:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1307572754, now seen corresponding path program 1 times [2023-08-03 23:37:47,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:37:47,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003492770] [2023-08-03 23:37:47,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:37:47,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:37:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:37:47,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:37:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:37:47,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:37:47,519 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:37:47,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:37:47,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:37:47,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:37:47,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:37:47,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:37:47,521 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:37:47,523 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:37:47,523 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:37:47,523 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:37:47,545 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:37:47,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 193 transitions, 434 flow [2023-08-03 23:37:47,941 INFO L124 PetriNetUnfolderBase]: 282/4389 cut-off events. [2023-08-03 23:37:47,941 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:37:47,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4678 conditions, 4389 events. 282/4389 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 42906 event pairs, 0 based on Foata normal form. 0/3888 useless extension candidates. Maximal degree in co-relation 3157. Up to 162 conditions per place. [2023-08-03 23:37:47,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 193 transitions, 434 flow [2023-08-03 23:37:47,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 162 transitions, 372 flow [2023-08-03 23:37:47,960 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:37:47,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 162 transitions, 372 flow [2023-08-03 23:37:47,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 162 transitions, 372 flow [2023-08-03 23:37:47,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 162 transitions, 372 flow [2023-08-03 23:37:48,095 INFO L124 PetriNetUnfolderBase]: 39/1878 cut-off events. [2023-08-03 23:37:48,095 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:37:48,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 1878 events. 39/1878 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 15040 event pairs, 0 based on Foata normal form. 0/1782 useless extension candidates. Maximal degree in co-relation 1483. Up to 81 conditions per place. [2023-08-03 23:37:48,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 6580 [2023-08-03 23:37:51,081 INFO L134 LiptonReduction]: Checked pairs total: 20895 [2023-08-03 23:37:51,081 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 23:37:51,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:37:51,084 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;@7edbd7b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:37:51,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:37:51,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:37:51,090 INFO L124 PetriNetUnfolderBase]: 0/91 cut-off events. [2023-08-03 23:37:51,090 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 23:37:51,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:37:51,090 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:37:51,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:37:51,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:37:51,091 INFO L85 PathProgramCache]: Analyzing trace with hash 486591396, now seen corresponding path program 1 times [2023-08-03 23:37:51,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:37:51,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110765238] [2023-08-03 23:37:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:37:51,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:37:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:37:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:37:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:37:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110765238] [2023-08-03 23:37:51,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110765238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:37:51,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236400551] [2023-08-03 23:37:51,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:37:51,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:37:51,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:37:51,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:37:51,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 23:37:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:37:51,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:37:51,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:37:51,382 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:37:51,382 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:37:51,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236400551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:37:51,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:37:51,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:37:51,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642348326] [2023-08-03 23:37:51,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:37:51,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:37:51,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:37:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:37:51,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:37:51,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 302 [2023-08-03 23:37:51,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 61 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 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 23:37:51,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:37:51,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 302 [2023-08-03 23:37:51,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand