/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-simple-array-sum.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 20:58:28,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 20:58:28,161 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 20:58:28,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 20:58:28,168 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 20:58:28,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 20:58:28,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 20:58:28,199 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 20:58:28,200 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 20:58:28,203 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 20:58:28,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 20:58:28,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 20:58:28,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 20:58:28,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 20:58:28,205 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 20:58:28,206 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 20:58:28,206 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 20:58:28,206 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 20:58:28,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 20:58:28,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 20:58:28,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 20:58:28,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 20:58:28,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 20:58:28,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 20:58:28,209 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 20:58:28,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 20:58:28,209 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 20:58:28,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 20:58:28,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 20:58:28,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 20:58:28,210 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:58:28,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 20:58:28,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 20:58:28,211 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 20:58:28,211 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 20:58:28,212 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 20:58:28,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 20:58:28,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 20:58:28,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 20:58:28,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 20:58:28,480 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 20:58:28,480 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 20:58:28,481 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-03 20:58:29,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 20:58:29,803 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 20:58:29,803 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-03 20:58:29,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9316f7a86/9c85eb87504d411eb30ddcb446e81f54/FLAG726893a58 [2023-08-03 20:58:29,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9316f7a86/9c85eb87504d411eb30ddcb446e81f54 [2023-08-03 20:58:29,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 20:58:29,827 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 20:58:29,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 20:58:29,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 20:58:29,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 20:58:29,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:58:29" (1/1) ... [2023-08-03 20:58:29,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbebb08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:29, skipping insertion in model container [2023-08-03 20:58:29,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 08:58:29" (1/1) ... [2023-08-03 20:58:29,853 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 20:58:29,992 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-simple-array-sum.wvr_bound2.c[2933,2946] [2023-08-03 20:58:29,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:58:30,004 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 20:58:30,024 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-simple-array-sum.wvr_bound2.c[2933,2946] [2023-08-03 20:58:30,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 20:58:30,034 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:58:30,034 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 20:58:30,040 INFO L206 MainTranslator]: Completed translation [2023-08-03 20:58:30,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30 WrapperNode [2023-08-03 20:58:30,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 20:58:30,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 20:58:30,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 20:58:30,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 20:58:30,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,074 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 172 [2023-08-03 20:58:30,075 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 20:58:30,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 20:58:30,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 20:58:30,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 20:58:30,083 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,083 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,086 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,086 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,093 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,097 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,100 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 20:58:30,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 20:58:30,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 20:58:30,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 20:58:30,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (1/1) ... [2023-08-03 20:58:30,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 20:58:30,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 20:58:30,134 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 20:58:30,160 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 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 20:58:30,179 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 20:58:30,179 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 20:58:30,180 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 20:58:30,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 20:58:30,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 20:58:30,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 20:58:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 20:58:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 20:58:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 20:58:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 20:58:30,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 20:58:30,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 20:58:30,183 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 20:58:30,268 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 20:58:30,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 20:58:30,554 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 20:58:30,578 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 20:58:30,578 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-03 20:58:30,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:58:30 BoogieIcfgContainer [2023-08-03 20:58:30,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 20:58:30,584 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 20:58:30,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 20:58:30,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 20:58:30,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 08:58:29" (1/3) ... [2023-08-03 20:58:30,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278f7a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:58:30, skipping insertion in model container [2023-08-03 20:58:30,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 08:58:30" (2/3) ... [2023-08-03 20:58:30,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@278f7a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 08:58:30, skipping insertion in model container [2023-08-03 20:58:30,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 08:58:30" (3/3) ... [2023-08-03 20:58:30,591 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-simple-array-sum.wvr_bound2.c [2023-08-03 20:58:30,598 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 20:58:30,607 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 20:58:30,607 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 20:58:30,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 20:58:30,709 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 20:58:30,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:30,933 INFO L124 PetriNetUnfolderBase]: 108/700 cut-off events. [2023-08-03 20:58:30,933 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:58:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 700 events. 108/700 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3391 event pairs, 0 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-03 20:58:30,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:30,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:30,962 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:58:30,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:30,989 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:30,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 486 flow [2023-08-03 20:58:31,081 INFO L124 PetriNetUnfolderBase]: 108/700 cut-off events. [2023-08-03 20:58:31,082 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 20:58:31,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 700 events. 108/700 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3391 event pairs, 0 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 403. Up to 16 conditions per place. [2023-08-03 20:58:31,097 INFO L119 LiptonReduction]: Number of co-enabled transitions 6378 [2023-08-03 20:58:36,150 INFO L134 LiptonReduction]: Checked pairs total: 12584 [2023-08-03 20:58:36,150 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-03 20:58:36,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:58:36,167 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;@9cb719b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:58:36,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:58:36,172 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:58:36,173 INFO L124 PetriNetUnfolderBase]: 5/37 cut-off events. [2023-08-03 20:58:36,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 20:58:36,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:58:36,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 20:58:36,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 20:58:36,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:58:36,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1359857046, now seen corresponding path program 1 times [2023-08-03 20:58:36,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:58:36,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592032398] [2023-08-03 20:58:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:58:36,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:58:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:58:36,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 20:58:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 20:58:36,424 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 20:58:36,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 20:58:36,427 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 20:58:36,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 20:58:36,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 20:58:36,428 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 20:58:36,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 20:58:36,429 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 20:58:36,431 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 20:58:36,431 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 20:58:36,459 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 20:58:36,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,073 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-03 20:58:37,073 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:58:37,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-03 20:58:37,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 20:58:37,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 270 transitions, 630 flow [2023-08-03 20:58:37,615 INFO L124 PetriNetUnfolderBase]: 912/4237 cut-off events. [2023-08-03 20:58:37,615 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 20:58:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 4237 events. 912/4237 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 33987 event pairs, 22 based on Foata normal form. 0/3569 useless extension candidates. Maximal degree in co-relation 2533. Up to 192 conditions per place. [2023-08-03 20:58:37,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 16856 [2023-08-03 20:58:42,696 INFO L134 LiptonReduction]: Checked pairs total: 44920 [2023-08-03 20:58:42,696 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-03 20:58:42,698 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 20:58:42,699 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;@9cb719b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 20:58:42,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 20:58:42,702 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 20:58:42,702 INFO L124 PetriNetUnfolderBase]: 5/36 cut-off events. [2023-08-03 20:58:42,702 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 20:58:42,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 20:58:42,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 20:58:42,703 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 20:58:42,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 20:58:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1304014168, now seen corresponding path program 1 times [2023-08-03 20:58:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 20:58:42,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578477206] [2023-08-03 20:58:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 20:58:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 20:58:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 20:58:42,825 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 20:58:42,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 20:58:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578477206] [2023-08-03 20:58:42,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578477206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 20:58:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 20:58:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 20:58:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644368476] [2023-08-03 20:58:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 20:58:42,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 20:58:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 20:58:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 20:58:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 20:58:42,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 495 [2023-08-03 20:58:42,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 83 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 20:58:42,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 20:58:42,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 495 [2023-08-03 20:58:42,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:00:06,329 INFO L124 PetriNetUnfolderBase]: 1192534/1394738 cut-off events. [2023-08-03 21:00:06,329 INFO L125 PetriNetUnfolderBase]: For 122383/122383 co-relation queries the response was YES. [2023-08-03 21:00:09,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821708 conditions, 1394738 events. 1192534/1394738 cut-off events. For 122383/122383 co-relation queries the response was YES. Maximal size of possible extension queue 25566. Compared 6889674 event pairs, 534271 based on Foata normal form. 0/798455 useless extension candidates. Maximal degree in co-relation 1015378. Up to 1362927 conditions per place. [2023-08-03 21:00:16,903 INFO L140 encePairwiseOnDemand]: 491/495 looper letters, 70 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-08-03 21:00:16,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 408 flow [2023-08-03 21:00:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:00:16,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:00:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2023-08-03 21:00:16,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49023569023569025 [2023-08-03 21:00:16,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2023-08-03 21:00:16,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2023-08-03 21:00:16,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:00:16,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2023-08-03 21:00:16,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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 21:00:16,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:00:16,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:00:16,989 INFO L175 Difference]: Start difference. First operand has 68 places, 83 transitions, 256 flow. Second operand 3 states and 728 transitions. [2023-08-03 21:00:16,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 408 flow [2023-08-03 21:00:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:00:17,116 INFO L231 Difference]: Finished difference. Result has 70 places, 83 transitions, 266 flow [2023-08-03 21:00:17,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2023-08-03 21:00:17,121 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-03 21:00:17,122 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 266 flow [2023-08-03 21:00:17,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 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 21:00:17,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:00:17,129 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:00:17,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:00:17,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 21:00:17,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:00:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1692731585, now seen corresponding path program 1 times [2023-08-03 21:00:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:00:17,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052064987] [2023-08-03 21:00:17,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:17,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:00:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:17,320 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 21:00:17,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:00:17,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052064987] [2023-08-03 21:00:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052064987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:00:17,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910124443] [2023-08-03 21:00:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:00:17,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:00:17,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:00:17,329 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 21:00:17,336 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 21:00:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:00:17,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:00:17,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:00:17,599 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 21:00:17,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:00:17,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910124443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:00:17,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:00:17,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:00:17,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164255837] [2023-08-03 21:00:17,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:00:17,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:00:17,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:00:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:00:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:00:17,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-03 21:00:17,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 21:00:17,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:00:17,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-03 21:00:17,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:01:45,689 INFO L124 PetriNetUnfolderBase]: 1192350/1394562 cut-off events. [2023-08-03 21:01:45,690 INFO L125 PetriNetUnfolderBase]: For 119796/119796 co-relation queries the response was YES. [2023-08-03 21:01:49,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2821341 conditions, 1394562 events. 1192350/1394562 cut-off events. For 119796/119796 co-relation queries the response was YES. Maximal size of possible extension queue 25541. Compared 6845600 event pairs, 425722 based on Foata normal form. 16/798404 useless extension candidates. Maximal degree in co-relation 1205917. Up to 1362643 conditions per place. [2023-08-03 21:01:56,488 INFO L140 encePairwiseOnDemand]: 491/495 looper letters, 75 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-03 21:01:56,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 442 flow [2023-08-03 21:01:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:01:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:01:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1165 transitions. [2023-08-03 21:01:56,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707070707070707 [2023-08-03 21:01:56,517 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1165 transitions. [2023-08-03 21:01:56,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1165 transitions. [2023-08-03 21:01:56,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:01:56,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1165 transitions. [2023-08-03 21:01:56,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 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 21:01:56,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 21:01:56,526 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 495.0) internal successors, (2970), 6 states have internal predecessors, (2970), 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 21:01:56,526 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 266 flow. Second operand 5 states and 1165 transitions. [2023-08-03 21:01:56,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 442 flow [2023-08-03 21:01:56,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 21:01:56,731 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 271 flow [2023-08-03 21:01:56,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2023-08-03 21:01:56,732 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-03 21:01:56,732 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 271 flow [2023-08-03 21:01:56,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 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 21:01:56,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:01:56,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:01:56,766 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 21:01:56,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:01:56,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 21:01:56,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:01:56,954 INFO L85 PathProgramCache]: Analyzing trace with hash 752342116, now seen corresponding path program 1 times [2023-08-03 21:01:56,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:01:56,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716058057] [2023-08-03 21:01:56,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:01:56,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:01:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:01:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:01:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:01:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716058057] [2023-08-03 21:01:57,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716058057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:01:57,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:01:57,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:01:57,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372799870] [2023-08-03 21:01:57,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:01:57,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:01:57,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:01:57,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:01:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:01:57,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 495 [2023-08-03 21:01:57,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 21:01:57,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:01:57,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 495 [2023-08-03 21:01:57,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:03:25,599 INFO L124 PetriNetUnfolderBase]: 1177134/1377176 cut-off events. [2023-08-03 21:03:25,599 INFO L125 PetriNetUnfolderBase]: For 103900/103900 co-relation queries the response was YES. [2023-08-03 21:03:29,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778704 conditions, 1377176 events. 1177134/1377176 cut-off events. For 103900/103900 co-relation queries the response was YES. Maximal size of possible extension queue 25829. Compared 6797044 event pairs, 528562 based on Foata normal form. 0/789041 useless extension candidates. Maximal degree in co-relation 809213. Up to 1344995 conditions per place. [2023-08-03 21:03:35,834 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 77 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-03 21:03:35,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 453 flow [2023-08-03 21:03:35,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:03:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:03:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 733 transitions. [2023-08-03 21:03:35,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936026936026936 [2023-08-03 21:03:35,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 733 transitions. [2023-08-03 21:03:35,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 733 transitions. [2023-08-03 21:03:35,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:03:35,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 733 transitions. [2023-08-03 21:03:35,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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 21:03:35,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:03:35,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:03:35,871 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 271 flow. Second operand 3 states and 733 transitions. [2023-08-03 21:03:35,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 453 flow [2023-08-03 21:03:35,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 446 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 21:03:35,962 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 279 flow [2023-08-03 21:03:35,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2023-08-03 21:03:35,964 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-03 21:03:35,965 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 279 flow [2023-08-03 21:03:35,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 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 21:03:35,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:03:35,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:03:35,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 21:03:35,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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 21:03:35,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:03:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1401289716, now seen corresponding path program 1 times [2023-08-03 21:03:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:03:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132886881] [2023-08-03 21:03:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:35,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:03:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:03:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:03:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132886881] [2023-08-03 21:03:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132886881] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:03:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431856793] [2023-08-03 21:03:36,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:03:36,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:03:36,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:03:36,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:03:36,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:03:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:03:36,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 21:03:36,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:03:36,318 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 21:03:36,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:03:36,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431856793] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:03:36,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:03:36,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 21:03:36,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109628066] [2023-08-03 21:03:36,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:03:36,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:03:36,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:03:36,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:03:36,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:03:36,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 495 [2023-08-03 21:03:36,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 21:03:36,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:03:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 495 [2023-08-03 21:03:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:05:09,068 INFO L124 PetriNetUnfolderBase]: 1174830/1383248 cut-off events. [2023-08-03 21:05:09,068 INFO L125 PetriNetUnfolderBase]: For 72151/72151 co-relation queries the response was YES. [2023-08-03 21:05:13,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783028 conditions, 1383248 events. 1174830/1383248 cut-off events. For 72151/72151 co-relation queries the response was YES. Maximal size of possible extension queue 27392. Compared 7201097 event pairs, 524298 based on Foata normal form. 0/796877 useless extension candidates. Maximal degree in co-relation 812435. Up to 1330980 conditions per place. [2023-08-03 21:05:21,311 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 86 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-08-03 21:05:21,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 102 transitions, 491 flow [2023-08-03 21:05:21,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:05:21,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:05:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-08-03 21:05:21,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2023-08-03 21:05:21,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-08-03 21:05:21,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-08-03 21:05:21,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:05:21,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-08-03 21:05:21,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 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 21:05:21,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:05:21,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 495.0) internal successors, (1980), 4 states have internal predecessors, (1980), 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 21:05:21,344 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 279 flow. Second operand 3 states and 740 transitions. [2023-08-03 21:05:21,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 102 transitions, 491 flow [2023-08-03 21:05:21,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 102 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:05:21,385 INFO L231 Difference]: Finished difference. Result has 75 places, 85 transitions, 288 flow [2023-08-03 21:05:21,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=75, PETRI_TRANSITIONS=85} [2023-08-03 21:05:21,396 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-03 21:05:21,397 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 85 transitions, 288 flow [2023-08-03 21:05:21,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 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 21:05:21,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:05:21,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:05:21,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:05:21,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:05:21,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:05:21,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:05:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 375790358, now seen corresponding path program 1 times [2023-08-03 21:05:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:05:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504504328] [2023-08-03 21:05:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:05:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:05:21,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:05:21,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504504328] [2023-08-03 21:05:21,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504504328] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:05:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181344205] [2023-08-03 21:05:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:05:21,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:05:21,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:05:21,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:05:21,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:05:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:05:21,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:05:21,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:05:21,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:05:21,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:05:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 21:05:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181344205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:05:21,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:05:21,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 21:05:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76377884] [2023-08-03 21:05:21,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:05:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:05:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:05:21,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:05:21,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:05:21,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-03 21:05:21,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 85 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 21:05:21,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:05:21,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-03 21:05:21,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:06:45,945 INFO L124 PetriNetUnfolderBase]: 1145876/1348141 cut-off events. [2023-08-03 21:06:45,946 INFO L125 PetriNetUnfolderBase]: For 80504/80504 co-relation queries the response was YES. [2023-08-03 21:06:50,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2725167 conditions, 1348141 events. 1145876/1348141 cut-off events. For 80504/80504 co-relation queries the response was YES. Maximal size of possible extension queue 27867. Compared 6952704 event pairs, 412250 based on Foata normal form. 4/783251 useless extension candidates. Maximal degree in co-relation 1154310. Up to 1309169 conditions per place. [2023-08-03 21:06:57,372 INFO L140 encePairwiseOnDemand]: 492/495 looper letters, 77 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-03 21:06:57,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 462 flow [2023-08-03 21:06:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:06:57,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:06:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 947 transitions. [2023-08-03 21:06:57,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782828282828283 [2023-08-03 21:06:57,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 947 transitions. [2023-08-03 21:06:57,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 947 transitions. [2023-08-03 21:06:57,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:06:57,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 947 transitions. [2023-08-03 21:06:57,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 236.75) internal successors, (947), 4 states have internal predecessors, (947), 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 21:06:57,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 21:06:57,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 495.0) internal successors, (2475), 5 states have internal predecessors, (2475), 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 21:06:57,405 INFO L175 Difference]: Start difference. First operand has 75 places, 85 transitions, 288 flow. Second operand 4 states and 947 transitions. [2023-08-03 21:06:57,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 462 flow [2023-08-03 21:06:57,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 94 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:06:57,466 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 284 flow [2023-08-03 21:06:57,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=495, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2023-08-03 21:06:57,469 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-03 21:06:57,469 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 284 flow [2023-08-03 21:06:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 21:06:57,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:06:57,470 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:06:57,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 21:06:57,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:06:57,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 21:06:57,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:06:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 952276601, now seen corresponding path program 1 times [2023-08-03 21:06:57,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:06:57,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193683528] [2023-08-03 21:06:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:57,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:06:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:06:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:06:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193683528] [2023-08-03 21:06:57,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193683528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:06:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765506215] [2023-08-03 21:06:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:06:57,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:06:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:06:57,790 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:06:57,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 21:06:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:06:57,911 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:06:57,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:06:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:06:57,937 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:06:57,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765506215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:06:57,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:06:57,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 21:06:57,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312143247] [2023-08-03 21:06:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:06:57,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:06:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:06:57,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:06:57,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:06:57,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 495 [2023-08-03 21:06:57,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 284 flow. Second operand has 5 states, 5 states have (on average 220.0) internal successors, (1100), 5 states have internal predecessors, (1100), 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 21:06:57,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:06:57,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 495 [2023-08-03 21:06:57,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 21:07:14,073 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:07:14,073 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:07:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:07:14,578 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 21:07:14,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 21:07:14,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:07:14,779 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 217/495 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 520639 conditions, 255060 events (216613/255059 cut-off events. For 17710/17710 co-relation queries the response was YES. Maximal size of possible extension queue 19357. Compared 1299373 event pairs, 40490 based on Foata normal form. 256/157358 useless extension candidates. Maximal degree in co-relation 237332. Up to 246957 conditions per place.). [2023-08-03 21:07:14,779 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 21:07:14,779 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 21:07:14,779 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 21:07:14,779 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 21:07:14,781 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:07:14,781 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:07:14,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:07:14 BasicIcfg [2023-08-03 21:07:14,784 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:07:14,784 INFO L158 Benchmark]: Toolchain (without parser) took 524957.06ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 436.0MB in the beginning and 14.2GB in the end (delta: -13.7GB). Peak memory consumption was 9.8GB. Max. memory is 16.0GB. [2023-08-03 21:07:14,784 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 360.7MB. Free memory is still 316.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:07:14,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.48ms. Allocated memory is still 482.3MB. Free memory was 436.0MB in the beginning and 423.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-03 21:07:14,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.66ms. Allocated memory is still 482.3MB. Free memory was 423.4MB in the beginning and 421.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:07:14,785 INFO L158 Benchmark]: Boogie Preprocessor took 27.05ms. Allocated memory is still 482.3MB. Free memory was 421.3MB in the beginning and 420.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:07:14,785 INFO L158 Benchmark]: RCFGBuilder took 477.90ms. Allocated memory is still 482.3MB. Free memory was 420.1MB in the beginning and 398.2MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 21:07:14,785 INFO L158 Benchmark]: TraceAbstraction took 524199.21ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 397.3MB in the beginning and 14.2GB in the end (delta: -13.8GB). Peak memory consumption was 9.7GB. Max. memory is 16.0GB. [2023-08-03 21:07:14,786 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 360.7MB. Free memory is still 316.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 212.48ms. Allocated memory is still 482.3MB. Free memory was 436.0MB in the beginning and 423.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.66ms. Allocated memory is still 482.3MB. Free memory was 423.4MB in the beginning and 421.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.05ms. Allocated memory is still 482.3MB. Free memory was 421.3MB in the beginning and 420.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 477.90ms. Allocated memory is still 482.3MB. Free memory was 420.1MB in the beginning and 398.2MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 524199.21ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 397.3MB in the beginning and 14.2GB in the end (delta: -13.8GB). Peak memory consumption was 9.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 198 PlacesBefore, 47 PlacesAfterwards, 222 TransitionsBefore, 55 TransitionsAfterwards, 6378 CoEnabledTransitionPairs, 7 FixpointIterations, 74 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 19 ConcurrentYvCompositions, 16 ChoiceCompositions, 195 TotalNumberOfCompositions, 12584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10093, independent: 9933, independent conditional: 0, independent unconditional: 9933, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3371, independent: 3342, independent conditional: 0, independent unconditional: 3342, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10093, independent: 6591, independent conditional: 0, independent unconditional: 6591, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 3371, unknown conditional: 0, unknown unconditional: 3371] , Statistics on independence cache: Total cache size (in pairs): 294, Positive cache size: 282, Positive conditional cache size: 0, Positive unconditional cache size: 282, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 236 PlacesBefore, 68 PlacesAfterwards, 270 TransitionsBefore, 83 TransitionsAfterwards, 16856 CoEnabledTransitionPairs, 8 FixpointIterations, 78 TrivialSequentialCompositions, 81 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 26 ConcurrentYvCompositions, 19 ChoiceCompositions, 225 TotalNumberOfCompositions, 44920 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 36322, independent: 35996, independent conditional: 0, independent unconditional: 35996, dependent: 326, dependent conditional: 0, dependent unconditional: 326, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8720, independent: 8682, independent conditional: 0, independent unconditional: 8682, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 36322, independent: 27314, independent conditional: 0, independent unconditional: 27314, dependent: 288, dependent conditional: 0, dependent unconditional: 288, unknown: 8720, unknown conditional: 0, unknown unconditional: 8720] , Statistics on independence cache: Total cache size (in pairs): 882, Positive cache size: 865, Positive conditional cache size: 0, Positive unconditional cache size: 865, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 217/495 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 520639 conditions, 255060 events (216613/255059 cut-off events. For 17710/17710 co-relation queries the response was YES. Maximal size of possible extension queue 19357. Compared 1299373 event pairs, 40490 based on Foata normal form. 256/157358 useless extension candidates. Maximal degree in co-relation 237332. Up to 246957 conditions per place.). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 217/495 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 520639 conditions, 255060 events (216613/255059 cut-off events. For 17710/17710 co-relation queries the response was YES. Maximal size of possible extension queue 19357. Compared 1299373 event pairs, 40490 based on Foata normal form. 256/157358 useless extension candidates. Maximal degree in co-relation 237332. Up to 246957 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 217/495 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 520639 conditions, 255060 events (216613/255059 cut-off events. For 17710/17710 co-relation queries the response was YES. Maximal size of possible extension queue 19357. Compared 1299373 event pairs, 40490 based on Foata normal form. 256/157358 useless extension candidates. Maximal degree in co-relation 237332. Up to 246957 conditions per place.). - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (5states, 217/495 universal loopers) in iteration 6,while PetriNetUnfolder was constructing finite prefix that currently has 520639 conditions, 255060 events (216613/255059 cut-off events. For 17710/17710 co-relation queries the response was YES. Maximal size of possible extension queue 19357. Compared 1299373 event pairs, 40490 based on Foata normal form. 256/157358 useless extension candidates. Maximal degree in co-relation 237332. Up to 246957 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 224 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: 5.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 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 with 2 thread instances CFG has 10 procedures, 256 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: 518.3s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 509.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 312 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 947 IncrementalHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 3 mSDtfsCounter, 947 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=4, InterpolantAutomatonStates: 18, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 767 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 62/76 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown