/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_popl20-more-queue-add-3-nl.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:45:17,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:45:17,183 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:45:17,186 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:45:17,186 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:45:17,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:45:17,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:45:17,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:45:17,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:45:17,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:45:17,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:45:17,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:45:17,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:45:17,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:45:17,205 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:45:17,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:45:17,213 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:45:17,213 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:45:17,213 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:45:17,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:45:17,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:45:17,214 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:45:17,215 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:45:17,215 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:45:17,215 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:45:17,215 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:45:17,215 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:45:17,215 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:45:17,216 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:45:17,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:45:17,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:45:17,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:45:17,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:45:17,348 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:45:17,348 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:45:17,349 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-queue-add-3-nl.wvr_bound2.c [2023-08-03 20:45:18,409 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:45:18,569 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:45:18,569 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-more-queue-add-3-nl.wvr_bound2.c [2023-08-03 20:45:18,575 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63778c563/751b0809f6c846f0848b4bf9e823665c/FLAG8d4b29e93 [2023-08-03 20:45:18,585 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63778c563/751b0809f6c846f0848b4bf9e823665c [2023-08-03 20:45:18,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:45:18,589 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:45:18,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:45:18,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:45:18,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:45:18,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,593 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8826f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18, skipping insertion in model container [2023-08-03 20:45:18,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,611 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:45:18,723 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_popl20-more-queue-add-3-nl.wvr_bound2.c[3858,3871] [2023-08-03 20:45:18,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:45:18,743 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:45:18,770 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_popl20-more-queue-add-3-nl.wvr_bound2.c[3858,3871] [2023-08-03 20:45:18,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:45:18,778 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:45:18,778 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:45:18,782 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:45:18,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18 WrapperNode [2023-08-03 20:45:18,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:45:18,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:45:18,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:45:18,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:45:18,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,804 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,825 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 313 [2023-08-03 20:45:18,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:45:18,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:45:18,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:45:18,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:45:18,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,836 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:45:18,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:45:18,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:45:18,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:45:18,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (1/1) ... [2023-08-03 20:45:18,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:45:18,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:45:18,896 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 20:45:18,931 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 20:45:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:45:18,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:45:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:45:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:45:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:45:18,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:45:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:45:18,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:45:18,950 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:45:18,951 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:45:18,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:45:18,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:45:18,953 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 20:45:19,053 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:45:19,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:45:19,343 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:45:19,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:45:19,463 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 20:45:19,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:45:19 BoogieIcfgContainer [2023-08-03 20:45:19,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:45:19,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:45:19,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:45:19,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:45:19,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:45:18" (1/3) ... [2023-08-03 20:45:19,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621dc97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:45:19, skipping insertion in model container [2023-08-03 20:45:19,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:45:18" (2/3) ... [2023-08-03 20:45:19,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621dc97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:45:19, skipping insertion in model container [2023-08-03 20:45:19,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:45:19" (3/3) ... [2023-08-03 20:45:19,473 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-more-queue-add-3-nl.wvr_bound2.c [2023-08-03 20:45:19,478 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:45:19,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:45:19,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:45:19,485 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:45:19,531 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:45:19,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,725 INFO L124 PetriNetUnfolderBase]: 111/739 cut-off events. [2023-08-03 20:45:19,725 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:45:19,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 739 events. 111/739 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3414 event pairs, 0 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2023-08-03 20:45:19,733 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,745 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:45:19,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,764 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 262 transitions, 566 flow [2023-08-03 20:45:19,834 INFO L124 PetriNetUnfolderBase]: 111/739 cut-off events. [2023-08-03 20:45:19,834 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:45:19,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 739 events. 111/739 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3414 event pairs, 0 based on Foata normal form. 0/618 useless extension candidates. Maximal degree in co-relation 433. Up to 16 conditions per place. [2023-08-03 20:45:19,844 INFO L119 LiptonReduction]: Number of co-enabled transitions 6842 [2023-08-03 20:45:25,853 INFO L134 LiptonReduction]: Checked pairs total: 16501 [2023-08-03 20:45:25,853 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-03 20:45:25,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:45:25,879 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;@7d8f17c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:45:25,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:45:25,885 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:45:25,885 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-08-03 20:45:25,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:45:25,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:45:25,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:45:25,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:45:25,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:45:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1955053804, now seen corresponding path program 1 times [2023-08-03 20:45:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:45:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954897366] [2023-08-03 20:45:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:45:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:45:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:45:26,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:45:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:45:26,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:45:26,174 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:45:26,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:45:26,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:45:26,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:45:26,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:45:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:45:26,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:45:26,179 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:45:26,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:45:26,213 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:45:26,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:26,642 INFO L124 PetriNetUnfolderBase]: 919/4271 cut-off events. [2023-08-03 20:45:26,642 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:45:26,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 4271 events. 919/4271 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 34105 event pairs, 22 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 2564. Up to 192 conditions per place. [2023-08-03 20:45:26,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:26,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:26,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:45:26,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:26,690 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:26,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 312 transitions, 714 flow [2023-08-03 20:45:27,086 INFO L124 PetriNetUnfolderBase]: 919/4271 cut-off events. [2023-08-03 20:45:27,087 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:45:27,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 4271 events. 919/4271 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 34105 event pairs, 22 based on Foata normal form. 0/3596 useless extension candidates. Maximal degree in co-relation 2564. Up to 192 conditions per place. [2023-08-03 20:45:27,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 18172 [2023-08-03 20:45:32,186 INFO L134 LiptonReduction]: Checked pairs total: 58548 [2023-08-03 20:45:32,186 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-03 20:45:32,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:45:32,188 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;@7d8f17c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:45:32,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:45:32,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:45:32,191 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2023-08-03 20:45:32,191 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:45:32,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:45:32,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:45:32,191 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 1 more)] === [2023-08-03 20:45:32,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:45:32,191 INFO L85 PathProgramCache]: Analyzing trace with hash 943554223, now seen corresponding path program 1 times [2023-08-03 20:45:32,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:45:32,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885729062] [2023-08-03 20:45:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:45:32,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:45:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:45:32,282 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 20:45:32,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:45:32,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885729062] [2023-08-03 20:45:32,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885729062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:45:32,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:45:32,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:45:32,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759199463] [2023-08-03 20:45:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:45:32,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:45:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:45:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:45:32,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:45:32,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 582 [2023-08-03 20:45:32,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 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 20:45:32,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:45:32,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 582 [2023-08-03 20:45:32,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand