/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_mix014.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:15:58,069 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:15:58,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:15:58,123 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:15:58,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:15:58,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:15:58,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:15:58,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:15:58,139 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:15:58,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:15:58,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:15:58,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:15:58,140 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:15:58,140 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:15:58,140 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:15:58,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:15:58,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:15:58,141 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:15:58,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:15:58,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:15:58,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:15:58,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:15:58,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:15:58,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:15:58,143 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:15:58,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:15:58,143 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:15:58,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:15:58,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:15:58,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:15:58,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:15:58,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:15:58,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:15:58,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:15:58,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:15:58,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:15:58,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:15:58,145 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:15:58,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:15:58,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:15:58,145 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:15:58,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:15:58,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:15:58,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:15:58,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:15:58,288 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:15:58,289 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:15:58,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014.opt_bound2.i [2023-08-03 23:15:59,403 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:15:59,617 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:15:59,617 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014.opt_bound2.i [2023-08-03 23:15:59,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf6db6a1/6ccbf6b4341644ffaa204d2ac56b5d3d/FLAGc8a56c4c8 [2023-08-03 23:15:59,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf6db6a1/6ccbf6b4341644ffaa204d2ac56b5d3d [2023-08-03 23:15:59,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:15:59,985 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:15:59,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:15:59,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:15:59,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:15:59,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:15:59" (1/1) ... [2023-08-03 23:15:59,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8bc116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:15:59, skipping insertion in model container [2023-08-03 23:15:59,989 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:15:59" (1/1) ... [2023-08-03 23:16:00,034 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:16:00,130 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_mix014.opt_bound2.i[944,957] [2023-08-03 23:16:00,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:16:00,317 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:16:00,329 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_mix014.opt_bound2.i[944,957] [2023-08-03 23:16:00,346 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:16:00,347 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:16:00,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:16:00,420 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:16:00,420 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:16:00,424 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:16:00,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00 WrapperNode [2023-08-03 23:16:00,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:16:00,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:16:00,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:16:00,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:16:00,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,458 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 198 [2023-08-03 23:16:00,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:16:00,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:16:00,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:16:00,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:16:00,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,467 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,475 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,476 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:16:00,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:16:00,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:16:00,480 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:16:00,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (1/1) ... [2023-08-03 23:16:00,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:16:00,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:16:00,505 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 23:16:00,542 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 23:16:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:16:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:16:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:16:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:16:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:16:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:16:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:16:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:16:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:16:00,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:16:00,566 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 23:16:00,660 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:16:00,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:16:00,876 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:16:00,986 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:16:00,986 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:16:00,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:16:00 BoogieIcfgContainer [2023-08-03 23:16:00,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:16:00,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:16:00,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:16:00,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:16:00,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:15:59" (1/3) ... [2023-08-03 23:16:00,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bedeb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:16:00, skipping insertion in model container [2023-08-03 23:16:00,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:16:00" (2/3) ... [2023-08-03 23:16:00,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bedeb0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:16:00, skipping insertion in model container [2023-08-03 23:16:00,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:16:00" (3/3) ... [2023-08-03 23:16:00,996 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix014.opt_bound2.i [2023-08-03 23:16:01,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:16:01,007 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:16:01,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:16:01,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:16:01,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:16:01,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 23:16:01,266 INFO L124 PetriNetUnfolderBase]: 62/936 cut-off events. [2023-08-03 23:16:01,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:16:01,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 936 events. 62/936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5787 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 549. Up to 32 conditions per place. [2023-08-03 23:16:01,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-03 23:16:01,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-03 23:16:01,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:16:01,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-03 23:16:01,299 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-03 23:16:01,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-03 23:16:01,341 INFO L124 PetriNetUnfolderBase]: 14/440 cut-off events. [2023-08-03 23:16:01,341 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:16:01,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 440 events. 14/440 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2037 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-03 23:16:01,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 2282 [2023-08-03 23:16:04,098 INFO L134 LiptonReduction]: Checked pairs total: 5812 [2023-08-03 23:16:04,098 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 23:16:04,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:16:04,120 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;@2031d3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:16:04,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:16:04,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:16:04,123 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:16:04,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:16:04,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:16:04,124 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:16:04,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:16:04,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:16:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1840283506, now seen corresponding path program 1 times [2023-08-03 23:16:04,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:16:04,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352121948] [2023-08-03 23:16:04,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:16:04,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:16:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:16:04,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:16:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:16:04,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:16:04,270 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:16:04,271 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:16:04,272 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:16:04,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:16:04,273 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:16:04,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:16:04,273 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:16:04,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:16:04,276 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:16:04,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:16:04,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:16:04,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 428 flow [2023-08-03 23:16:04,686 INFO L124 PetriNetUnfolderBase]: 282/4358 cut-off events. [2023-08-03 23:16:04,686 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:16:04,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4647 conditions, 4358 events. 282/4358 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42506 event pairs, 0 based on Foata normal form. 0/3821 useless extension candidates. Maximal degree in co-relation 3126. Up to 162 conditions per place. [2023-08-03 23:16:04,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 190 transitions, 428 flow [2023-08-03 23:16:04,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 159 transitions, 366 flow [2023-08-03 23:16:04,715 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:16:04,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 159 transitions, 366 flow [2023-08-03 23:16:04,715 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 159 transitions, 366 flow [2023-08-03 23:16:04,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 159 transitions, 366 flow [2023-08-03 23:16:04,881 INFO L124 PetriNetUnfolderBase]: 39/1847 cut-off events. [2023-08-03 23:16:04,882 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:16:04,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 1847 events. 39/1847 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14769 event pairs, 0 based on Foata normal form. 0/1715 useless extension candidates. Maximal degree in co-relation 1452. Up to 81 conditions per place. [2023-08-03 23:16:04,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 6340 [2023-08-03 23:16:07,629 INFO L134 LiptonReduction]: Checked pairs total: 18813 [2023-08-03 23:16:07,630 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 23:16:07,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:16:07,632 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;@2031d3a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:16:07,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:16:07,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:16:07,642 INFO L124 PetriNetUnfolderBase]: 0/92 cut-off events. [2023-08-03 23:16:07,642 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 23:16:07,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:16:07,643 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:16:07,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:16:07,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:16:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash -747266538, now seen corresponding path program 1 times [2023-08-03 23:16:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:16:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008645928] [2023-08-03 23:16:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:16:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:16:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:16:07,851 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 23:16:07,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:16:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008645928] [2023-08-03 23:16:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008645928] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:16:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24769838] [2023-08-03 23:16:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:16:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:16:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:16:07,866 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 23:16:07,867 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 23:16:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:16:07,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:16:07,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:16:08,008 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 23:16:08,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:16:08,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24769838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:16:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:16:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:16:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576141268] [2023-08-03 23:16:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:16:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:16:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:16:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:16:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:16:08,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 298 [2023-08-03 23:16:08,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 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 23:16:08,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:16:08,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 298 [2023-08-03 23:16:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand