/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/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:53:40,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:53:40,053 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:53:40,059 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:53:40,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:53:40,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:53:40,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:53:40,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:53:40,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:53:40,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:53:40,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:53:40,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:53:40,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:53:40,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:53:40,091 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:53:40,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:53:40,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:53:40,092 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:53:40,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:53:40,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:53:40,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:53:40,093 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:53:40,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:53:40,094 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:53:40,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:53:40,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:53:40,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:53:40,096 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:53:40,096 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:53:40,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:53:40,096 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:53:40,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:53:40,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:53:40,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:53:40,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:53:40,258 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:53:40,259 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:53:40,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 15:53:41,204 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:53:41,388 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:53:41,389 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 15:53:41,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50d0d8b2/0254f0e748dc48b59724d7cdb78b3572/FLAGad7929296 [2023-08-03 15:53:41,408 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50d0d8b2/0254f0e748dc48b59724d7cdb78b3572 [2023-08-03 15:53:41,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:53:41,410 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:53:41,411 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:53:41,411 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:53:41,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:53:41,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@497b4b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41, skipping insertion in model container [2023-08-03 15:53:41,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,449 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:53:41,553 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:53:41,651 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i[30959,30972] [2023-08-03 15:53:41,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:53:41,665 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:53:41,681 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-03 15:53:41,695 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [270] [2023-08-03 15:53:41,696 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [270] [2023-08-03 15:53:41,703 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_39_rand_lock_p0_vs_bound2.i[30959,30972] [2023-08-03 15:53:41,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:53:41,724 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:41,724 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:41,724 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:53:41,729 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:53:41,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41 WrapperNode [2023-08-03 15:53:41,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:53:41,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:53:41,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:53:41,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:53:41,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,767 INFO L138 Inliner]: procedures = 176, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2023-08-03 15:53:41,767 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:53:41,768 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:53:41,768 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:53:41,768 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:53:41,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,774 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,778 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:53:41,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:53:41,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:53:41,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:53:41,787 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (1/1) ... [2023-08-03 15:53:41,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:53:41,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:41,818 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 15:53:41,824 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 15:53:41,847 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:53:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:53:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:53:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:53:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:53:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:53:41,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:53:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:53:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:53:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:53:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:53:41,850 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 15:53:41,952 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:53:41,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:53:42,091 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:53:42,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:53:42,124 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 15:53:42,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:53:42 BoogieIcfgContainer [2023-08-03 15:53:42,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:53:42,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:53:42,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:53:42,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:53:42,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:53:41" (1/3) ... [2023-08-03 15:53:42,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22542334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:53:42, skipping insertion in model container [2023-08-03 15:53:42,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:53:41" (2/3) ... [2023-08-03 15:53:42,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22542334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:53:42, skipping insertion in model container [2023-08-03 15:53:42,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:53:42" (3/3) ... [2023-08-03 15:53:42,138 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_39_rand_lock_p0_vs_bound2.i [2023-08-03 15:53:42,144 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:53:42,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:53:42,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:53:42,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:53:42,200 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:53:42,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,262 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2023-08-03 15:53:42,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:42,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 15:53:42,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,270 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:53:42,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 137 flow [2023-08-03 15:53:42,289 INFO L124 PetriNetUnfolderBase]: 4/76 cut-off events. [2023-08-03 15:53:42,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:42,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 4/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2023-08-03 15:53:42,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 1152 [2023-08-03 15:53:43,822 INFO L134 LiptonReduction]: Checked pairs total: 825 [2023-08-03 15:53:43,822 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-03 15:53:43,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:53:43,835 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;@6a4b6b2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:53:43,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:53:43,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:53:43,837 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-03 15:53:43,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:43,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:43,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:53:43,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:53:43,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 10226979, now seen corresponding path program 1 times [2023-08-03 15:53:43,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:43,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640603813] [2023-08-03 15:53:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:43,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:44,004 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 15:53:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640603813] [2023-08-03 15:53:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640603813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:53:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569695799] [2023-08-03 15:53:44,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:44,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:44,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:53:44,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 131 [2023-08-03 15:53:44,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 10 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 15:53:44,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:44,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 131 [2023-08-03 15:53:44,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:44,081 INFO L124 PetriNetUnfolderBase]: 10/27 cut-off events. [2023-08-03 15:53:44,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:44,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 27 events. 10/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 3 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 42. Up to 18 conditions per place. [2023-08-03 15:53:44,083 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 7 selfloop transitions, 2 changer transitions 2/12 dead transitions. [2023-08-03 15:53:44,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 12 transitions, 51 flow [2023-08-03 15:53:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:44,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:44,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2023-08-03 15:53:44,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46564885496183206 [2023-08-03 15:53:44,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions. [2023-08-03 15:53:44,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions. [2023-08-03 15:53:44,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:44,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions. [2023-08-03 15:53:44,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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 15:53:44,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 15:53:44,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 15:53:44,099 INFO L175 Difference]: Start difference. First operand has 12 places, 10 transitions, 25 flow. Second operand 3 states and 183 transitions. [2023-08-03 15:53:44,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 12 transitions, 51 flow [2023-08-03 15:53:44,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 12 transitions, 51 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:53:44,101 INFO L231 Difference]: Finished difference. Result has 13 places, 8 transitions, 25 flow [2023-08-03 15:53:44,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=25, PETRI_PLACES=13, PETRI_TRANSITIONS=8} [2023-08-03 15:53:44,104 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 1 predicate places. [2023-08-03 15:53:44,105 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 8 transitions, 25 flow [2023-08-03 15:53:44,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 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 15:53:44,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:44,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:53:44,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:53:44,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:53:44,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:44,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1238192496, now seen corresponding path program 1 times [2023-08-03 15:53:44,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:44,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702460371] [2023-08-03 15:53:44,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:44,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:53:44,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:53:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:53:44,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:53:44,139 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:53:44,140 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:53:44,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:53:44,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:53:44,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:53:44,142 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:53:44,143 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:53:44,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:53:44,157 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:53:44,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,172 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 15:53:44,172 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:53:44,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 15:53:44,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,174 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:53:44,174 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,174 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 103 transitions, 218 flow [2023-08-03 15:53:44,186 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2023-08-03 15:53:44,186 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:53:44,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 128 events. 7/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 214 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 87. Up to 6 conditions per place. [2023-08-03 15:53:44,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 4968 [2023-08-03 15:53:45,708 INFO L134 LiptonReduction]: Checked pairs total: 5701 [2023-08-03 15:53:45,708 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 15:53:45,710 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:53:45,710 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;@6a4b6b2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:53:45,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 15:53:45,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:53:45,712 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-03 15:53:45,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:53:45,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:45,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 15:53:45,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:45,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 17327644, now seen corresponding path program 1 times [2023-08-03 15:53:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832111017] [2023-08-03 15:53:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:45,741 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 15:53:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832111017] [2023-08-03 15:53:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832111017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:53:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197119019] [2023-08-03 15:53:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:45,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:45,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:53:45,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 200 [2023-08-03 15:53:45,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:45,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:45,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 200 [2023-08-03 15:53:45,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:45,816 INFO L124 PetriNetUnfolderBase]: 297/493 cut-off events. [2023-08-03 15:53:45,816 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-03 15:53:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 493 events. 297/493 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1875 event pairs, 109 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 433. Up to 273 conditions per place. [2023-08-03 15:53:45,818 INFO L140 encePairwiseOnDemand]: 195/200 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-08-03 15:53:45,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 36 transitions, 157 flow [2023-08-03 15:53:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-03 15:53:45,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2023-08-03 15:53:45,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-03 15:53:45,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-03 15:53:45,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:45,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-03 15:53:45,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:45,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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 15:53:45,823 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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 15:53:45,823 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 297 transitions. [2023-08-03 15:53:45,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 36 transitions, 157 flow [2023-08-03 15:53:45,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 36 transitions, 155 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:53:45,824 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 75 flow [2023-08-03 15:53:45,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2023-08-03 15:53:45,825 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2023-08-03 15:53:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 75 flow [2023-08-03 15:53:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:45,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:45,826 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:53:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:53:45,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:45,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1360870485, now seen corresponding path program 1 times [2023-08-03 15:53:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:45,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743760252] [2023-08-03 15:53:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:45,875 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 15:53:45,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743760252] [2023-08-03 15:53:45,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743760252] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:53:45,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142341269] [2023-08-03 15:53:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:45,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:45,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:53:45,879 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 15:53:45,906 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 15:53:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:45,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:53:45,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:53:46,003 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 15:53:46,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:53:46,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142341269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:46,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:53:46,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:53:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403241456] [2023-08-03 15:53:46,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:53:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:46,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:53:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:53:46,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 200 [2023-08-03 15:53:46,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:46,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:46,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 200 [2023-08-03 15:53:46,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:46,077 INFO L124 PetriNetUnfolderBase]: 219/373 cut-off events. [2023-08-03 15:53:46,077 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-08-03 15:53:46,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 373 events. 219/373 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1273 event pairs, 1 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 345. Up to 249 conditions per place. [2023-08-03 15:53:46,078 INFO L140 encePairwiseOnDemand]: 196/200 looper letters, 39 selfloop transitions, 3 changer transitions 6/49 dead transitions. [2023-08-03 15:53:46,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 236 flow [2023-08-03 15:53:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:53:46,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:53:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 470 transitions. [2023-08-03 15:53:46,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47 [2023-08-03 15:53:46,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 470 transitions. [2023-08-03 15:53:46,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 470 transitions. [2023-08-03 15:53:46,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:46,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 470 transitions. [2023-08-03 15:53:46,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.0) internal successors, (470), 5 states have internal predecessors, (470), 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 15:53:46,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:46,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 200.0) internal successors, (1200), 6 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:46,084 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 75 flow. Second operand 5 states and 470 transitions. [2023-08-03 15:53:46,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 236 flow [2023-08-03 15:53:46,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:53:46,085 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 78 flow [2023-08-03 15:53:46,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-03 15:53:46,085 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 7 predicate places. [2023-08-03 15:53:46,085 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 78 flow [2023-08-03 15:53:46,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:46,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:53:46,086 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:53:46,092 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 15:53:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:53:46,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 15:53:46,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:53:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1187276991, now seen corresponding path program 1 times [2023-08-03 15:53:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:53:46,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955362539] [2023-08-03 15:53:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:53:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:53:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:53:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:53:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:53:46,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955362539] [2023-08-03 15:53:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955362539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:53:46,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:53:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:53:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578954548] [2023-08-03 15:53:46,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:53:46,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:53:46,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:53:46,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:53:46,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:53:46,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 200 [2023-08-03 15:53:46,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 15:53:46,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:53:46,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 200 [2023-08-03 15:53:46,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:53:46,370 INFO L124 PetriNetUnfolderBase]: 179/300 cut-off events. [2023-08-03 15:53:46,370 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-03 15:53:46,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 300 events. 179/300 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 985 event pairs, 140 based on Foata normal form. 12/311 useless extension candidates. Maximal degree in co-relation 478. Up to 295 conditions per place. [2023-08-03 15:53:46,370 INFO L140 encePairwiseOnDemand]: 197/200 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-03 15:53:46,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 20 transitions, 108 flow [2023-08-03 15:53:46,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:53:46,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:53:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-03 15:53:46,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683333333333333 [2023-08-03 15:53:46,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-03 15:53:46,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-03 15:53:46,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:53:46,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-03 15:53:46,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:53:46,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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 15:53:46,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 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 15:53:46,375 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 78 flow. Second operand 3 states and 281 transitions. [2023-08-03 15:53:46,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 20 transitions, 108 flow [2023-08-03 15:53:46,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:53:46,377 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-03 15:53:46,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=200, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-03 15:53:46,378 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 5 predicate places. [2023-08-03 15:53:46,378 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-03 15:53:46,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 15:53:46,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 15:53:46,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 15:53:46,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 15:53:46,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 15:53:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:53:46,380 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 15:53:46,382 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:53:46,383 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:53:46,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:53:46 BasicIcfg [2023-08-03 15:53:46,387 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:53:46,388 INFO L158 Benchmark]: Toolchain (without parser) took 4977.34ms. Allocated memory is still 482.3MB. Free memory was 442.8MB in the beginning and 382.8MB in the end (delta: 60.0MB). Peak memory consumption was 61.4MB. Max. memory is 16.0GB. [2023-08-03 15:53:46,388 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 352.3MB. Free memory is still 302.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:53:46,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.19ms. Allocated memory is still 482.3MB. Free memory was 442.4MB in the beginning and 422.5MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:53:46,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.59ms. Allocated memory is still 482.3MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:53:46,388 INFO L158 Benchmark]: Boogie Preprocessor took 17.72ms. Allocated memory is still 482.3MB. Free memory was 420.4MB in the beginning and 419.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:53:46,389 INFO L158 Benchmark]: RCFGBuilder took 339.82ms. Allocated memory is still 482.3MB. Free memory was 419.0MB in the beginning and 403.6MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 15:53:46,389 INFO L158 Benchmark]: TraceAbstraction took 4260.29ms. Allocated memory is still 482.3MB. Free memory was 402.8MB in the beginning and 382.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.0GB. [2023-08-03 15:53:46,390 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 352.3MB. Free memory is still 302.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 319.19ms. Allocated memory is still 482.3MB. Free memory was 442.4MB in the beginning and 422.5MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.59ms. Allocated memory is still 482.3MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.72ms. Allocated memory is still 482.3MB. Free memory was 420.4MB in the beginning and 419.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 339.82ms. Allocated memory is still 482.3MB. Free memory was 419.0MB in the beginning and 403.6MB in the end (delta: 15.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4260.29ms. Allocated memory is still 482.3MB. Free memory was 402.8MB in the beginning and 382.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 270]: Unsoundness Warning unspecified type, defaulting to int C: short [270] - GenericResultAtLocation [Line: 270]: Unsoundness Warning unspecified type, defaulting to int C: short [270] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 66 PlacesBefore, 12 PlacesAfterwards, 66 TransitionsBefore, 10 TransitionsAfterwards, 1152 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 65 TotalNumberOfCompositions, 825 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 825, independent: 825, independent conditional: 0, independent unconditional: 825, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 591, independent: 591, independent conditional: 0, independent unconditional: 591, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 825, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 591, unknown conditional: 0, unknown unconditional: 591] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 103 PlacesBefore, 25 PlacesAfterwards, 103 TransitionsBefore, 22 TransitionsAfterwards, 4968 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 5701 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4405, independent: 4320, independent conditional: 0, independent unconditional: 4320, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2631, independent: 2597, independent conditional: 0, independent unconditional: 2597, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4405, independent: 1723, independent conditional: 0, independent unconditional: 1723, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 2631, unknown conditional: 0, unknown unconditional: 2631] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 726]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 99 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 4 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 170 IncrementalHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=2, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 0 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 13/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:53:46,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...