/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:32:14,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:32:14,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:32:14,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:32:14,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:32:14,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:32:14,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:32:14,504 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:32:14,505 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:32:14,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:32:14,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:32:14,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:32:14,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:32:14,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:32:14,511 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:32:14,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:32:14,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:32:14,511 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:32:14,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:32:14,512 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:32:14,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:32:14,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:32:14,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:32:14,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:32:14,513 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:32:14,513 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:32:14,513 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:32:14,514 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:32:14,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:32:14,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:32:14,515 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:32:14,515 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:32:14,515 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:32:14,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:32:14,516 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:32:14,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:32:14,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:32:14,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:32:14,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:32:14,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:32:14,744 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:32:14,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.opt_bound2.i [2023-08-03 18:32:15,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:32:16,079 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:32:16,080 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.opt_bound2.i [2023-08-03 18:32:16,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df6651ae/91820e3b399a4025842db857a14fe83f/FLAG5dd33e6b7 [2023-08-03 18:32:16,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2df6651ae/91820e3b399a4025842db857a14fe83f [2023-08-03 18:32:16,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:32:16,110 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:32:16,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:32:16,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:32:16,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:32:16,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9c96eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16, skipping insertion in model container [2023-08-03 18:32:16,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,153 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:32:16,281 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_safe016_rmo.opt_bound2.i[949,962] [2023-08-03 18:32:16,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:32:16,526 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:32:16,538 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_safe016_rmo.opt_bound2.i[949,962] [2023-08-03 18:32:16,555 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:32:16,556 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:32:16,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:32:16,610 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:32:16,610 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:32:16,616 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:32:16,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16 WrapperNode [2023-08-03 18:32:16,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:32:16,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:32:16,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:32:16,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:32:16,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,665 INFO L138 Inliner]: procedures = 177, calls = 89, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 216 [2023-08-03 18:32:16,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:32:16,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:32:16,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:32:16,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:32:16,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,700 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:32:16,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:32:16,709 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:32:16,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:32:16,710 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (1/1) ... [2023-08-03 18:32:16,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:32:16,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:32:16,774 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 18:32:16,798 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 18:32:16,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:32:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:32:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:32:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:32:16,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:32:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:32:16,813 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:32:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:32:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:32:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:32:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:32:16,814 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:32:16,814 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 18:32:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 18:32:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:32:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:32:16,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:32:16,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:32:16,817 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 18:32:17,007 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:32:17,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:32:17,445 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:32:17,702 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:32:17,703 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 18:32:17,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:32:17 BoogieIcfgContainer [2023-08-03 18:32:17,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:32:17,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:32:17,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:32:17,710 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:32:17,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:32:16" (1/3) ... [2023-08-03 18:32:17,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31340f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:32:17, skipping insertion in model container [2023-08-03 18:32:17,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:32:16" (2/3) ... [2023-08-03 18:32:17,711 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a31340f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:32:17, skipping insertion in model container [2023-08-03 18:32:17,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:32:17" (3/3) ... [2023-08-03 18:32:17,712 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe016_rmo.opt_bound2.i [2023-08-03 18:32:17,720 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:32:17,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:32:17,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:32:17,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:32:17,810 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:32:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 172 transitions, 364 flow [2023-08-03 18:32:18,048 INFO L124 PetriNetUnfolderBase]: 62/931 cut-off events. [2023-08-03 18:32:18,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:32:18,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 931 events. 62/931 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5567 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 568. Up to 32 conditions per place. [2023-08-03 18:32:18,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 172 transitions, 364 flow [2023-08-03 18:32:18,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 158 transitions, 336 flow [2023-08-03 18:32:18,076 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:32:18,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 158 transitions, 336 flow [2023-08-03 18:32:18,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 158 transitions, 336 flow [2023-08-03 18:32:18,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 158 transitions, 336 flow [2023-08-03 18:32:18,191 INFO L124 PetriNetUnfolderBase]: 46/707 cut-off events. [2023-08-03 18:32:18,191 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:32:18,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 707 events. 46/707 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3813 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 456. Up to 32 conditions per place. [2023-08-03 18:32:18,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 3110 [2023-08-03 18:32:24,053 INFO L134 LiptonReduction]: Checked pairs total: 8685 [2023-08-03 18:32:24,053 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-03 18:32:24,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:32:24,068 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;@7cbc2db9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:32:24,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:32:24,073 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:32:24,073 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-08-03 18:32:24,073 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:32:24,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:32:24,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:32:24,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:32:24,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:32:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1283832747, now seen corresponding path program 1 times [2023-08-03 18:32:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:32:24,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046310530] [2023-08-03 18:32:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:32:24,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:32:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:32:24,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:32:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:32:24,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:32:24,293 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:32:24,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 18:32:24,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 18:32:24,295 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:32:24,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:32:24,296 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:32:24,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:32:24,301 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 18:32:24,307 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:32:24,308 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:32:24,359 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:32:24,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 202 transitions, 452 flow [2023-08-03 18:32:25,054 INFO L124 PetriNetUnfolderBase]: 282/4226 cut-off events. [2023-08-03 18:32:25,055 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:32:25,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4515 conditions, 4226 events. 282/4226 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40170 event pairs, 0 based on Foata normal form. 0/3743 useless extension candidates. Maximal degree in co-relation 3075. Up to 162 conditions per place. [2023-08-03 18:32:25,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 202 transitions, 452 flow [2023-08-03 18:32:25,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 188 transitions, 424 flow [2023-08-03 18:32:25,085 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:32:25,085 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 188 transitions, 424 flow [2023-08-03 18:32:25,086 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 188 transitions, 424 flow [2023-08-03 18:32:25,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 188 transitions, 424 flow [2023-08-03 18:32:25,480 INFO L124 PetriNetUnfolderBase]: 201/3092 cut-off events. [2023-08-03 18:32:25,481 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:32:25,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 3092 events. 201/3092 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 27183 event pairs, 0 based on Foata normal form. 0/2771 useless extension candidates. Maximal degree in co-relation 2319. Up to 162 conditions per place. [2023-08-03 18:32:25,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 7784 [2023-08-03 18:32:31,321 INFO L134 LiptonReduction]: Checked pairs total: 26237 [2023-08-03 18:32:31,321 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-03 18:32:31,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:32:31,324 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;@7cbc2db9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:32:31,324 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:32:31,330 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:32:31,331 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2023-08-03 18:32:31,331 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 18:32:31,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:32:31,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:32:31,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:32:31,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:32:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1214230097, now seen corresponding path program 1 times [2023-08-03 18:32:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:32:31,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51590656] [2023-08-03 18:32:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:32:31,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:32:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:32:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:32:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:32:31,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51590656] [2023-08-03 18:32:31,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51590656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:32:31,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:32:31,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:32:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779304438] [2023-08-03 18:32:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:32:31,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:32:31,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:32:31,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:32:31,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:32:31,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 337 [2023-08-03 18:32:31,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 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 18:32:31,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:32:31,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 337 [2023-08-03 18:32:31,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand