/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/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:58:18,524 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:58:18,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:58:18,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:58:18,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:58:18,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:58:18,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:58:18,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:58:18,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:58:18,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:58:18,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:58:18,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:58:18,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:58:18,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:58:18,639 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:58:18,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:58:18,640 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:58:18,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:58:18,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:58:18,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:58:18,648 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:58:18,649 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:58:18,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:58:18,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:58:18,650 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:58:18,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:58:18,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:58:18,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:58:18,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:58:18,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:58:18,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:58:18,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:58:18,654 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:58:18,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:58:18,655 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:58:18,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:58:18,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:58:18,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:58:18,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:58:18,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:58:18,886 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:58:18,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 21:58:19,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:58:20,210 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:58:20,211 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 21:58:20,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1971aff77/b5be614060fd4f949e0d7baffcd823d9/FLAG112c06066 [2023-08-03 21:58:20,251 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1971aff77/b5be614060fd4f949e0d7baffcd823d9 [2023-08-03 21:58:20,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:58:20,255 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:58:20,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:58:20,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:58:20,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:58:20,260 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a7b151b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20, skipping insertion in model container [2023-08-03 21:58:20,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,306 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:58:20,454 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 21:58:20,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i[30959,30972] [2023-08-03 21:58:20,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:58:20,643 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:58:20,669 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 21:58:20,675 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [270] [2023-08-03 21:58:20,677 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [270] [2023-08-03 21:58:20,702 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i[30959,30972] [2023-08-03 21:58:20,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:58:20,739 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:58:20,740 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:58:20,740 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:58:20,746 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:58:20,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20 WrapperNode [2023-08-03 21:58:20,747 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:58:20,748 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:58:20,748 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:58:20,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:58:20,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,811 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2023-08-03 21:58:20,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:58:20,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:58:20,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:58:20,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:58:20,819 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:58:20,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:58:20,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:58:20,858 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:58:20,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (1/1) ... [2023-08-03 21:58:20,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:58:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:58:20,890 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 21:58:20,915 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 21:58:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 21:58:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 21:58:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:58:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 21:58:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:58:20,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:58:20,936 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 21:58:21,074 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:58:21,076 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:58:21,207 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:58:21,253 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:58:21,253 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 21:58:21,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:58:21 BoogieIcfgContainer [2023-08-03 21:58:21,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:58:21,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:58:21,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:58:21,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:58:21,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:58:20" (1/3) ... [2023-08-03 21:58:21,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b02637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:58:21, skipping insertion in model container [2023-08-03 21:58:21,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:58:20" (2/3) ... [2023-08-03 21:58:21,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b02637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:58:21, skipping insertion in model container [2023-08-03 21:58:21,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:58:21" (3/3) ... [2023-08-03 21:58:21,264 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 21:58:21,272 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:58:21,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:58:21,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:58:21,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:58:21,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:58:21,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,393 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2023-08-03 21:58:21,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:58:21,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 21:58:21,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,407 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:58:21,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 21:58:21,453 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2023-08-03 21:58:21,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:58:21,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 21:58:21,455 INFO L119 LiptonReduction]: Number of co-enabled transitions 1152 [2023-08-03 21:58:23,553 INFO L134 LiptonReduction]: Checked pairs total: 825 [2023-08-03 21:58:23,554 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-03 21:58:23,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:58:23,570 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;@2eb28852, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:58:23,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:58:23,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:58:23,574 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-03 21:58:23,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:58:23,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:23,575 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:58:23,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:58:23,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1238192496, now seen corresponding path program 1 times [2023-08-03 21:58:23,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:23,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473574677] [2023-08-03 21:58:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:23,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:58:23,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:58:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:58:23,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:58:23,752 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:58:23,753 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:58:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:58:23,755 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:58:23,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:58:23,758 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:58:23,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:58:23,791 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 21:58:23,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,828 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 21:58:23,828 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:58:23,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 21:58:23,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:58:23,832 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:23,852 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 21:58:23,853 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:58:23,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 21:58:23,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 4968 [2023-08-03 21:58:25,796 INFO L134 LiptonReduction]: Checked pairs total: 5701 [2023-08-03 21:58:25,796 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 21:58:25,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:58:25,799 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;@2eb28852, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:58:25,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:58:25,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:58:25,803 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2023-08-03 21:58:25,804 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:58:25,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:25,804 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:58:25,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:58:25,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1360870485, now seen corresponding path program 1 times [2023-08-03 21:58:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481032765] [2023-08-03 21:58:25,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:58:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:58:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481032765] [2023-08-03 21:58:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481032765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:58:25,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798891490] [2023-08-03 21:58:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:25,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:58:25,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:58:25,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:58:25,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:58:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:26,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:58:26,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:58:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:58:26,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:58:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798891490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:58:26,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:58:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:58:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873925451] [2023-08-03 21:58:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:58:26,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:58:26,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:58:26,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:58:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:58:26,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 200 [2023-08-03 21:58:26,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 21:58:26,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:58:26,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 200 [2023-08-03 21:58:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:58:26,236 INFO L124 PetriNetUnfolderBase]: 274/460 cut-off events. [2023-08-03 21:58:26,236 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 21:58:26,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 460 events. 274/460 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1634 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 155. Up to 309 conditions per place. [2023-08-03 21:58:26,240 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2023-08-03 21:58:26,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 190 flow [2023-08-03 21:58:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:58:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:58:26,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 471 transitions. [2023-08-03 21:58:26,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471 [2023-08-03 21:58:26,253 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 471 transitions. [2023-08-03 21:58:26,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 471 transitions. [2023-08-03 21:58:26,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:58:26,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 471 transitions. [2023-08-03 21:58:26,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 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 21:58:26,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 21:58:26,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 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 21:58:26,269 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 5 states and 471 transitions. [2023-08-03 21:58:26,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 190 flow [2023-08-03 21:58:26,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:58:26,272 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-03 21:58:26,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-03 21:58:26,277 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-03 21:58:26,277 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-03 21:58:26,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 21:58:26,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:58:26,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:58:26,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:58:26,483 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:58:26,484 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:58:26,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,497 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 21:58:26,497 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:58:26,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 21:58:26,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,498 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,499 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:58:26,499 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,499 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 21:58:26,509 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 21:58:26,509 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 21:58:26,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 21:58:26,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 4968 [2023-08-03 21:58:28,335 INFO L134 LiptonReduction]: Checked pairs total: 5702 [2023-08-03 21:58:28,335 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-03 21:58:28,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:58:28,338 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;@2eb28852, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:58:28,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 21:58:28,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:58:28,340 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 21:58:28,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:58:28,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:28,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 21:58:28,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:58:28,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:28,341 INFO L85 PathProgramCache]: Analyzing trace with hash 20376989, now seen corresponding path program 1 times [2023-08-03 21:58:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:28,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646717210] [2023-08-03 21:58:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:28,397 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 21:58:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:58:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646717210] [2023-08-03 21:58:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646717210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:58:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:58:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:58:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559092693] [2023-08-03 21:58:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:58:28,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:58:28,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:58:28,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:58:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:58:28,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-08-03 21:58:28,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 21:58:28,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:58:28,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-08-03 21:58:28,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:58:28,513 INFO L124 PetriNetUnfolderBase]: 297/493 cut-off events. [2023-08-03 21:58:28,514 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 21:58:28,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 493 events. 297/493 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1872 event pairs, 109 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 433. Up to 273 conditions per place. [2023-08-03 21:58:28,517 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 21 selfloop transitions, 3 changer transitions 10/36 dead transitions. [2023-08-03 21:58:28,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 36 transitions, 157 flow [2023-08-03 21:58:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:58:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:58:28,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-03 21:58:28,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-08-03 21:58:28,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-03 21:58:28,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-03 21:58:28,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:58:28,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-03 21:58:28,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 21:58:28,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 21:58:28,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 21:58:28,526 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 297 transitions. [2023-08-03 21:58:28,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 36 transitions, 157 flow [2023-08-03 21:58:28,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 36 transitions, 155 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 21:58:28,528 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 67 flow [2023-08-03 21:58:28,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-08-03 21:58:28,530 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-03 21:58:28,530 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 67 flow [2023-08-03 21:58:28,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 21:58:28,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:58:28,531 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:58:28,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:58:28,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:58:28,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:58:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1474554641, now seen corresponding path program 1 times [2023-08-03 21:58:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:58:28,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493539823] [2023-08-03 21:58:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:58:28,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:58:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:58:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:58:28,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:58:28,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493539823] [2023-08-03 21:58:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493539823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:58:28,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:58:28,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:58:28,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603863172] [2023-08-03 21:58:28,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:58:28,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:58:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:58:28,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:58:28,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:58:28,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-08-03 21:58:28,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 21:58:28,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:58:28,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-08-03 21:58:28,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:58:28,689 INFO L124 PetriNetUnfolderBase]: 249/413 cut-off events. [2023-08-03 21:58:28,689 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-03 21:58:28,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920 conditions, 413 events. 249/413 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1478 event pairs, 197 based on Foata normal form. 16/389 useless extension candidates. Maximal degree in co-relation 449. Up to 404 conditions per place. [2023-08-03 21:58:28,690 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-03 21:58:28,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 95 flow [2023-08-03 21:58:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:58:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:58:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-03 21:58:28,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660033167495854 [2023-08-03 21:58:28,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-03 21:58:28,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-03 21:58:28,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:58:28,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-03 21:58:28,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 21:58:28,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 21:58:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 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 21:58:28,695 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 67 flow. Second operand 3 states and 281 transitions. [2023-08-03 21:58:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 95 flow [2023-08-03 21:58:28,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 89 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:58:28,696 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-03 21:58:28,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-03 21:58:28,697 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2023-08-03 21:58:28,697 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-03 21:58:28,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 21:58:28,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 21:58:28,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 21:58:28,698 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 21:58:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:58:28,698 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 21:58:28,699 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (2/2) [2023-08-03 21:58:28,705 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:58:28,705 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:58:28,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:58:28 BasicIcfg [2023-08-03 21:58:28,711 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:58:28,712 INFO L158 Benchmark]: Toolchain (without parser) took 8457.27ms. Allocated memory is still 518.0MB. Free memory was 480.3MB in the beginning and 427.3MB in the end (delta: 53.0MB). Peak memory consumption was 56.0MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,712 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 299.8MB in the beginning and 299.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:58:28,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.67ms. Allocated memory is still 518.0MB. Free memory was 480.3MB in the beginning and 459.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.24ms. Allocated memory is still 518.0MB. Free memory was 459.9MB in the beginning and 457.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,713 INFO L158 Benchmark]: Boogie Preprocessor took 44.71ms. Allocated memory is still 518.0MB. Free memory was 457.8MB in the beginning and 456.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,713 INFO L158 Benchmark]: RCFGBuilder took 398.17ms. Allocated memory is still 518.0MB. Free memory was 456.6MB in the beginning and 441.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,714 INFO L158 Benchmark]: TraceAbstraction took 7453.68ms. Allocated memory is still 518.0MB. Free memory was 441.4MB in the beginning and 427.3MB in the end (delta: 14.2MB). Peak memory consumption was 16.1MB. Max. memory is 16.0GB. [2023-08-03 21:58:28,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory was 299.8MB in the beginning and 299.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 491.67ms. Allocated memory is still 518.0MB. Free memory was 480.3MB in the beginning and 459.9MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 63.24ms. Allocated memory is still 518.0MB. Free memory was 459.9MB in the beginning and 457.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.71ms. Allocated memory is still 518.0MB. Free memory was 457.8MB in the beginning and 456.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 398.17ms. Allocated memory is still 518.0MB. Free memory was 456.6MB in the beginning and 441.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 7453.68ms. Allocated memory is still 518.0MB. Free memory was 441.4MB in the beginning and 427.3MB in the end (delta: 14.2MB). Peak memory consumption was 16.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 270]: Unsoundness Warning unspecified type, defaulting to int C: short [270] - GenericResultAtLocation [Line: 270]: Unsoundness Warning unspecified type, defaulting to int C: short [270] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 66 PlacesBefore, 12 PlacesAfterwards, 66 TransitionsBefore, 10 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, 825 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 825, independent: 825, independent conditional: 0, independent unconditional: 825, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 591, independent: 591, independent conditional: 0, independent unconditional: 591, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 825, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 591, unknown conditional: 0, unknown unconditional: 591] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 103 PlacesBefore, 25 PlacesAfterwards, 103 TransitionsBefore, 22 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 5701 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4405, independent: 4320, independent conditional: 0, independent unconditional: 4320, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2631, independent: 2597, independent conditional: 0, independent unconditional: 2597, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4405, independent: 1723, independent conditional: 0, independent unconditional: 1723, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 2631, unknown conditional: 0, unknown unconditional: 2631] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 103 PlacesBefore, 25 PlacesAfterwards, 103 TransitionsBefore, 22 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 98 TotalNumberOfCompositions, 5702 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4539, independent: 4456, independent conditional: 0, independent unconditional: 4456, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2642, independent: 2611, independent conditional: 0, independent unconditional: 2611, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4539, independent: 1845, independent conditional: 0, independent unconditional: 1845, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 2642, unknown conditional: 0, unknown unconditional: 2642] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 726]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 99 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 5 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=1, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 21:58:28,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...