/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_mix008.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:10:02,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:10:03,002 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:10:03,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:10:03,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:10:03,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:10:03,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:10:03,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:10:03,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:10:03,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:10:03,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:10:03,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:10:03,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:10:03,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:10:03,025 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:10:03,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:10:03,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:10:03,026 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:10:03,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:10:03,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:10:03,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:10:03,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:10:03,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:10:03,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:10:03,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:10:03,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:10:03,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:10:03,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:10:03,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:10:03,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:10:03,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:10:03,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:10:03,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:10:03,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:10:03,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:10:03,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:10:03,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:10:03,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:10:03,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:10:03,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:10:03,033 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:10:03,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:10:03,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:10:03,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:10:03,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:10:03,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:10:03,260 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:10:03,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008.opt_bound2.i [2023-08-03 23:10:04,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:10:04,668 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:10:04,668 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix008.opt_bound2.i [2023-08-03 23:10:04,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83a0e5c/4e0decd91621489ab48cd5229ad32664/FLAG7bd83ae3a [2023-08-03 23:10:04,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a83a0e5c/4e0decd91621489ab48cd5229ad32664 [2023-08-03 23:10:04,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:10:04,705 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:10:04,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:10:04,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:10:04,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:10:04,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:10:04" (1/1) ... [2023-08-03 23:10:04,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b585a2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:04, skipping insertion in model container [2023-08-03 23:10:04,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:10:04" (1/1) ... [2023-08-03 23:10:04,759 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:10:04,883 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_mix008.opt_bound2.i[944,957] [2023-08-03 23:10:05,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:10:05,116 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:10:05,129 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_mix008.opt_bound2.i[944,957] [2023-08-03 23:10:05,139 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:10:05,140 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:10:05,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:10:05,205 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:10:05,205 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:10:05,211 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:10:05,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05 WrapperNode [2023-08-03 23:10:05,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:10:05,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:10:05,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:10:05,212 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:10:05,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,259 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2023-08-03 23:10:05,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:10:05,260 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:10:05,260 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:10:05,260 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:10:05,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,272 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,272 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,285 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,287 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:10:05,291 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:10:05,291 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:10:05,291 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:10:05,292 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (1/1) ... [2023-08-03 23:10:05,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:10:05,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:10:05,323 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 23:10:05,349 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 23:10:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:10:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:10:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:10:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:10:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:10:05,378 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:10:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:10:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:10:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:10:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:10:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:10:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:10:05,379 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:10:05,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:10:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:10:05,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:10:05,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:10:05,381 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 23:10:05,494 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:10:05,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:10:05,796 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:10:05,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:10:05,960 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:10:05,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:10:05 BoogieIcfgContainer [2023-08-03 23:10:05,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:10:05,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:10:05,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:10:05,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:10:05,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:10:04" (1/3) ... [2023-08-03 23:10:05,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3089aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:10:05, skipping insertion in model container [2023-08-03 23:10:05,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:10:05" (2/3) ... [2023-08-03 23:10:05,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3089aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:10:05, skipping insertion in model container [2023-08-03 23:10:05,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:10:05" (3/3) ... [2023-08-03 23:10:05,971 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix008.opt_bound2.i [2023-08-03 23:10:05,977 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:10:05,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:10:05,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:10:05,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:10:06,057 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:10:06,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-03 23:10:06,310 INFO L124 PetriNetUnfolderBase]: 62/937 cut-off events. [2023-08-03 23:10:06,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:10:06,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 987 conditions, 937 events. 62/937 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5825 event pairs, 0 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 550. Up to 32 conditions per place. [2023-08-03 23:10:06,318 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-03 23:10:06,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 126 transitions, 272 flow [2023-08-03 23:10:06,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:10:06,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-03 23:10:06,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-03 23:10:06,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 126 transitions, 272 flow [2023-08-03 23:10:06,396 INFO L124 PetriNetUnfolderBase]: 14/441 cut-off events. [2023-08-03 23:10:06,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:10:06,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 441 events. 14/441 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2055 event pairs, 0 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-03 23:10:06,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 2252 [2023-08-03 23:10:09,852 INFO L134 LiptonReduction]: Checked pairs total: 5682 [2023-08-03 23:10:09,853 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-03 23:10:09,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:10:09,869 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;@668312f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:10:09,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:10:09,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:10:09,874 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-03 23:10:09,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:10:09,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:10:09,875 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:10:09,875 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 23:10:09,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:10:09,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1769110418, now seen corresponding path program 1 times [2023-08-03 23:10:09,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:10:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876688865] [2023-08-03 23:10:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:09,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:10:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:10:09,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:10:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:10:10,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:10:10,030 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:10:10,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:10:10,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:10:10,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:10:10,033 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:10:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:10:10,034 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:10:10,036 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:10:10,037 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:10:10,037 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:10:10,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:10:10,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 189 transitions, 426 flow [2023-08-03 23:10:10,654 INFO L124 PetriNetUnfolderBase]: 282/4369 cut-off events. [2023-08-03 23:10:10,654 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:10:10,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 4369 events. 282/4369 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 42842 event pairs, 0 based on Foata normal form. 0/3832 useless extension candidates. Maximal degree in co-relation 3137. Up to 162 conditions per place. [2023-08-03 23:10:10,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 189 transitions, 426 flow [2023-08-03 23:10:10,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 158 transitions, 364 flow [2023-08-03 23:10:10,685 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:10:10,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 158 transitions, 364 flow [2023-08-03 23:10:10,686 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 158 transitions, 364 flow [2023-08-03 23:10:10,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 158 transitions, 364 flow [2023-08-03 23:10:10,889 INFO L124 PetriNetUnfolderBase]: 39/1858 cut-off events. [2023-08-03 23:10:10,889 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:10:10,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2147 conditions, 1858 events. 39/1858 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 14944 event pairs, 0 based on Foata normal form. 0/1726 useless extension candidates. Maximal degree in co-relation 1463. Up to 81 conditions per place. [2023-08-03 23:10:10,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 6276 [2023-08-03 23:10:14,238 INFO L134 LiptonReduction]: Checked pairs total: 19877 [2023-08-03 23:10:14,238 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-03 23:10:14,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:10:14,241 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;@668312f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:10:14,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:10:14,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:10:14,250 INFO L124 PetriNetUnfolderBase]: 0/96 cut-off events. [2023-08-03 23:10:14,250 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 23:10:14,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:10:14,250 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:10:14,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:10:14,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:10:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash -436650502, now seen corresponding path program 1 times [2023-08-03 23:10:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:10:14,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568856424] [2023-08-03 23:10:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:10:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:10:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:10:14,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:10:14,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568856424] [2023-08-03 23:10:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568856424] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:10:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:10:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:10:14,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237282304] [2023-08-03 23:10:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:10:14,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:10:14,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:10:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:10:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:10:14,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 296 [2023-08-03 23:10:14,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 23:10:14,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:10:14,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 296 [2023-08-03 23:10:14,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand