/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/weaver_parallel-bakery-4.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:58:22,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:58:22,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:58:22,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:58:22,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:58:22,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:58:22,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:58:22,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:58:22,681 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:58:22,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:58:22,682 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:58:22,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:58:22,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:58:22,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:58:22,683 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:58:22,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:58:22,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:58:22,684 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:58:22,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:58:22,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:58:22,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:58:22,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:58:22,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:58:22,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:58:22,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:58:22,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:58:22,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:58:22,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:58:22,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:58:22,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:58:22,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:58:22,687 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:58:22,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:58:22,687 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:58:22,688 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:58:22,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:58:22,688 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:58:22,688 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:58:22,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:58:22,689 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:58:22,689 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:58:22,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:58:22,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:58:22,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:58:22,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:58:22,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:58:22,936 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:58:22,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bakery-4.wvr_bound2.c [2023-08-03 19:58:23,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:58:24,098 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:58:24,099 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bakery-4.wvr_bound2.c [2023-08-03 19:58:24,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ab23c10/3683a09f49a64b1c93a11f44d0a2798a/FLAG170c7cfe0 [2023-08-03 19:58:24,125 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ab23c10/3683a09f49a64b1c93a11f44d0a2798a [2023-08-03 19:58:24,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:58:24,128 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:58:24,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:58:24,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:58:24,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:58:24,132 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,133 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2491de27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24, skipping insertion in model container [2023-08-03 19:58:24,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,155 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:58:24,309 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bakery-4.wvr_bound2.c[8302,8315] [2023-08-03 19:58:24,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:58:24,320 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:58:24,349 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_parallel-bakery-4.wvr_bound2.c[8302,8315] [2023-08-03 19:58:24,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:58:24,361 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:58:24,361 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:58:24,366 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:58:24,366 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24 WrapperNode [2023-08-03 19:58:24,366 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:58:24,367 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:58:24,367 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:58:24,367 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:58:24,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,382 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,404 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 469 [2023-08-03 19:58:24,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:58:24,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:58:24,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:58:24,405 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:58:24,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:58:24,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:58:24,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:58:24,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:58:24,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (1/1) ... [2023-08-03 19:58:24,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:58:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:58:24,457 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 19:58:24,493 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 19:58:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:58:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:58:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:58:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:58:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-03 19:58:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:58:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:58:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:58:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:58:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:58:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:58:24,531 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 19:58:24,618 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:58:24,620 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:58:24,962 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:58:25,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:58:25,124 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-03 19:58:25,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:58:25 BoogieIcfgContainer [2023-08-03 19:58:25,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:58:25,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:58:25,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:58:25,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:58:25,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:58:24" (1/3) ... [2023-08-03 19:58:25,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55036b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:58:25, skipping insertion in model container [2023-08-03 19:58:25,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:58:24" (2/3) ... [2023-08-03 19:58:25,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55036b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:58:25, skipping insertion in model container [2023-08-03 19:58:25,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:58:25" (3/3) ... [2023-08-03 19:58:25,136 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_parallel-bakery-4.wvr_bound2.c [2023-08-03 19:58:25,142 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:58:25,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:58:25,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:58:25,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:58:25,258 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-08-03 19:58:25,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 276 transitions, 620 flow [2023-08-03 19:58:25,633 INFO L124 PetriNetUnfolderBase]: 239/1643 cut-off events. [2023-08-03 19:58:25,634 INFO L125 PetriNetUnfolderBase]: For 128/179 co-relation queries the response was YES. [2023-08-03 19:58:25,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1821 conditions, 1643 events. 239/1643 cut-off events. For 128/179 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12352 event pairs, 0 based on Foata normal form. 0/1422 useless extension candidates. Maximal degree in co-relation 944. Up to 33 conditions per place. [2023-08-03 19:58:25,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 276 transitions, 620 flow [2023-08-03 19:58:25,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 264 transitions, 596 flow [2023-08-03 19:58:25,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:58:25,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 264 transitions, 596 flow [2023-08-03 19:58:25,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 264 transitions, 596 flow [2023-08-03 19:58:25,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 264 transitions, 596 flow [2023-08-03 19:58:25,828 INFO L124 PetriNetUnfolderBase]: 239/1451 cut-off events. [2023-08-03 19:58:25,828 INFO L125 PetriNetUnfolderBase]: For 128/179 co-relation queries the response was YES. [2023-08-03 19:58:25,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 1451 events. 239/1451 cut-off events. For 128/179 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10162 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 848. Up to 33 conditions per place. [2023-08-03 19:58:25,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 15572 [2023-08-03 19:58:29,529 INFO L134 LiptonReduction]: Checked pairs total: 131848 [2023-08-03 19:58:29,530 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-03 19:58:29,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:58:29,547 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;@d4a84e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:58:29,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:58:29,552 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:58:29,552 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-08-03 19:58:29,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:58:29,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:58:29,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:58:29,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:58:29,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:58:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -545609595, now seen corresponding path program 1 times [2023-08-03 19:58:29,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:58:29,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074847956] [2023-08-03 19:58:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:29,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:58:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:58:29,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:58:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:58:29,745 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:58:29,746 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:58:29,747 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 19:58:29,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 19:58:29,748 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:58:29,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:58:29,749 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 19:58:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:58:29,749 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:58:29,751 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:58:29,751 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:58:29,786 INFO L144 ThreadInstanceAdder]: Constructed 32 joinOtherThreadTransitions. [2023-08-03 19:58:29,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 364 transitions, 872 flow [2023-08-03 19:58:33,057 INFO L124 PetriNetUnfolderBase]: 5322/20961 cut-off events. [2023-08-03 19:58:33,057 INFO L125 PetriNetUnfolderBase]: For 4176/4476 co-relation queries the response was YES. [2023-08-03 19:58:33,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25346 conditions, 20961 events. 5322/20961 cut-off events. For 4176/4476 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 233620 event pairs, 125 based on Foata normal form. 0/18160 useless extension candidates. Maximal degree in co-relation 12717. Up to 1024 conditions per place. [2023-08-03 19:58:33,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 364 transitions, 872 flow [2023-08-03 19:58:33,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 352 transitions, 848 flow [2023-08-03 19:58:33,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:58:33,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 352 transitions, 848 flow [2023-08-03 19:58:33,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 352 transitions, 848 flow [2023-08-03 19:58:33,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 352 transitions, 848 flow [2023-08-03 19:58:35,658 INFO L124 PetriNetUnfolderBase]: 5322/17889 cut-off events. [2023-08-03 19:58:35,658 INFO L125 PetriNetUnfolderBase]: For 4176/4476 co-relation queries the response was YES. [2023-08-03 19:58:35,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22274 conditions, 17889 events. 5322/17889 cut-off events. For 4176/4476 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 185467 event pairs, 125 based on Foata normal form. 0/15344 useless extension candidates. Maximal degree in co-relation 11181. Up to 1024 conditions per place. [2023-08-03 19:58:36,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 45288 [2023-08-03 19:58:39,624 INFO L134 LiptonReduction]: Checked pairs total: 509717 [2023-08-03 19:58:39,625 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-08-03 19:58:39,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:58:39,632 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;@d4a84e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:58:39,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:58:39,636 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:58:39,637 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2023-08-03 19:58:39,637 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 19:58:39,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:58:39,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:58:39,637 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 19:58:39,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:58:39,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1414346941, now seen corresponding path program 1 times [2023-08-03 19:58:39,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:58:39,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929700929] [2023-08-03 19:58:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:58:39,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:58:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:58:39,765 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 19:58:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:58:39,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929700929] [2023-08-03 19:58:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929700929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:58:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:58:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:58:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787980833] [2023-08-03 19:58:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:58:39,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:58:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:58:39,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:58:39,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:58:39,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 534 [2023-08-03 19:58:39,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 197 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 256.0) internal successors, (768), 3 states have internal predecessors, (768), 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 19:58:39,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:58:39,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 534 [2023-08-03 19:58:39,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand