/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix004.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:30:20,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:30:20,149 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:30:20,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:30:20,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:30:20,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:30:20,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:30:20,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:30:20,165 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:30:20,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:30:20,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:30:20,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:30:20,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:30:20,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:30:20,171 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:30:20,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:30:20,172 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:30:20,172 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:30:20,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:30:20,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:30:20,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:30:20,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:30:20,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:30:20,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:30:20,174 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:30:20,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:30:20,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:30:20,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:30:20,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:30:20,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:30:20,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:30:20,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:30:20,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:30:20,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:30:20,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:30:20,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:30:20,178 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:30:20,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:30:20,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:30:20,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:30:20,178 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:30:20,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:30:20,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:30:20,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:30:20,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:30:20,436 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:30:20,436 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:30:20,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix004.opt_bound2.i [2023-08-04 05:30:21,507 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:30:21,667 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:30:21,667 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix004.opt_bound2.i [2023-08-04 05:30:21,678 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d96f9cd/7e34d89fe2b5462ab26888b850bf087a/FLAGf89f804ae [2023-08-04 05:30:21,694 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0d96f9cd/7e34d89fe2b5462ab26888b850bf087a [2023-08-04 05:30:21,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:30:21,697 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:30:21,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:30:21,698 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:30:21,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:30:21,701 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:30:21" (1/1) ... [2023-08-04 05:30:21,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af7810e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:21, skipping insertion in model container [2023-08-04 05:30:21,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:30:21" (1/1) ... [2023-08-04 05:30:21,752 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:30:21,884 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix004.opt_bound2.i[944,957] [2023-08-04 05:30:22,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:30:22,071 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:30:22,081 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix004.opt_bound2.i[944,957] [2023-08-04 05:30:22,098 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:30:22,099 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:30:22,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:30:22,139 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:30:22,140 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:30:22,144 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:30:22,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22 WrapperNode [2023-08-04 05:30:22,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:30:22,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:30:22,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:30:22,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:30:22,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,183 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 199 [2023-08-04 05:30:22,183 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:30:22,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:30:22,184 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:30:22,184 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:30:22,197 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,237 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:30:22,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:30:22,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:30:22,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:30:22,238 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (1/1) ... [2023-08-04 05:30:22,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:30:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:30:22,276 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) [2023-08-04 05:30:22,278 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 [2023-08-04 05:30:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:30:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:30:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:30:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:30:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:30:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:30:22,324 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:30:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:30:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:30:22,325 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:30:22,427 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:30:22,428 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:30:22,773 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:30:22,878 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:30:22,878 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:30:22,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:30:22 BoogieIcfgContainer [2023-08-04 05:30:22,879 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:30:22,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:30:22,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:30:22,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:30:22,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:30:21" (1/3) ... [2023-08-04 05:30:22,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b89e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:30:22, skipping insertion in model container [2023-08-04 05:30:22,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:30:22" (2/3) ... [2023-08-04 05:30:22,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787b89e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:30:22, skipping insertion in model container [2023-08-04 05:30:22,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:30:22" (3/3) ... [2023-08-04 05:30:22,886 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix004.opt_bound2.i [2023-08-04 05:30:22,891 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:30:22,897 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:30:22,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:30:22,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:30:22,944 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:30:22,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:30:23,174 INFO L124 PetriNetUnfolderBase]: 62/939 cut-off events. [2023-08-04 05:30:23,174 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:23,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 939 events. 62/939 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5797 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 552. Up to 32 conditions per place. [2023-08-04 05:30:23,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:30:23,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 156 transitions, 326 flow [2023-08-04 05:30:23,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:30:23,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 156 transitions, 326 flow [2023-08-04 05:30:23,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 156 transitions, 326 flow [2023-08-04 05:30:23,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 156 transitions, 326 flow [2023-08-04 05:30:23,310 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:30:23,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:23,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5732 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 538. Up to 32 conditions per place. [2023-08-04 05:30:23,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 3914 [2023-08-04 05:30:26,714 INFO L134 LiptonReduction]: Checked pairs total: 9516 [2023-08-04 05:30:26,715 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 05:30:26,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:30:26,727 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;@48ff94c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:30:26,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:30:26,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:30:26,732 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-08-04 05:30:26,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:26,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:26,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:30:26,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:30:26,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash -927899083, now seen corresponding path program 1 times [2023-08-04 05:30:26,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379927862] [2023-08-04 05:30:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:26,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:30:26,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:30:26,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379927862] [2023-08-04 05:30:26,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379927862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:30:26,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:30:26,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:30:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848317622] [2023-08-04 05:30:26,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:30:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:30:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:30:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:30:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:30:26,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2023-08-04 05:30:26,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-08-04 05:30:26,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:30:26,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2023-08-04 05:30:26,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:30:27,878 INFO L124 PetriNetUnfolderBase]: 7194/10890 cut-off events. [2023-08-04 05:30:27,879 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-04 05:30:27,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21478 conditions, 10890 events. 7194/10890 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 69169 event pairs, 6164 based on Foata normal form. 0/9483 useless extension candidates. Maximal degree in co-relation 21464. Up to 10282 conditions per place. [2023-08-04 05:30:27,928 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 32 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:30:27,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 164 flow [2023-08-04 05:30:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:30:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:30:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:30:27,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148401826484018 [2023-08-04 05:30:27,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:30:27,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:30:27,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:30:27,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:30:27,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2023-08-04 05:30:27,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:27,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:27,957 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 90 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:30:27,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 164 flow [2023-08-04 05:30:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:30:27,961 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 96 flow [2023-08-04 05:30:27,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:30:27,964 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-04 05:30:27,965 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 96 flow [2023-08-04 05:30:27,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2023-08-04 05:30:27,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:27,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:30:27,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:30:27,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:30:27,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash 35957461, now seen corresponding path program 1 times [2023-08-04 05:30:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542084765] [2023-08-04 05:30:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:27,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:30:28,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:30:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542084765] [2023-08-04 05:30:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542084765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:30:28,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774471314] [2023-08-04 05:30:28,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:30:28,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:30:28,093 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) [2023-08-04 05:30:28,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:30:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:28,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:30:28,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:30:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:30:28,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:30:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774471314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:30:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:30:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:30:28,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652345514] [2023-08-04 05:30:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:30:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:30:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:30:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:30:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:30:28,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2023-08-04 05:30:28,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-08-04 05:30:28,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:30:28,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2023-08-04 05:30:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:30:28,884 INFO L124 PetriNetUnfolderBase]: 5786/8554 cut-off events. [2023-08-04 05:30:28,885 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-04 05:30:28,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16912 conditions, 8554 events. 5786/8554 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 51353 event pairs, 4240 based on Foata normal form. 0/7510 useless extension candidates. Maximal degree in co-relation 16895. Up to 8092 conditions per place. [2023-08-04 05:30:28,923 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 34 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 05:30:28,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 180 flow [2023-08-04 05:30:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:30:28,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:30:28,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-04 05:30:28,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2023-08-04 05:30:28,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-04 05:30:28,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-04 05:30:28,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:30:28,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-04 05:30:28,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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) [2023-08-04 05:30:28,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:28,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:28,931 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 96 flow. Second operand 3 states and 452 transitions. [2023-08-04 05:30:28,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 180 flow [2023-08-04 05:30:28,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:30:28,933 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 100 flow [2023-08-04 05:30:28,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:30:28,934 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-04 05:30:28,934 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 100 flow [2023-08-04 05:30:28,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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) [2023-08-04 05:30:28,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:28,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:30:28,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:30:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:30:29,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:30:29,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1889919779, now seen corresponding path program 1 times [2023-08-04 05:30:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782377765] [2023-08-04 05:30:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:30:29,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:30:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782377765] [2023-08-04 05:30:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782377765] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:30:29,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906389861] [2023-08-04 05:30:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:29,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:30:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:30:29,225 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) [2023-08-04 05:30:29,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 05:30:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:29,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:30:29,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:30:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:30:29,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:30:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906389861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:30:29,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:30:29,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:30:29,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674964316] [2023-08-04 05:30:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:30:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:30:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:30:29,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:30:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:30:29,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 292 [2023-08-04 05:30:29,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-04 05:30:29,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:30:29,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 292 [2023-08-04 05:30:29,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:30:29,965 INFO L124 PetriNetUnfolderBase]: 4940/7219 cut-off events. [2023-08-04 05:30:29,966 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 05:30:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14308 conditions, 7219 events. 4940/7219 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41711 event pairs, 3518 based on Foata normal form. 0/6426 useless extension candidates. Maximal degree in co-relation 14291. Up to 6713 conditions per place. [2023-08-04 05:30:29,991 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 37 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 05:30:29,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 196 flow [2023-08-04 05:30:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:30:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:30:29,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-04 05:30:29,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519406392694064 [2023-08-04 05:30:29,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-04 05:30:29,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-04 05:30:29,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:30:29,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-04 05:30:29,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2023-08-04 05:30:29,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:29,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 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) [2023-08-04 05:30:29,996 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 100 flow. Second operand 3 states and 455 transitions. [2023-08-04 05:30:29,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 196 flow [2023-08-04 05:30:29,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:30:29,997 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 104 flow [2023-08-04 05:30:29,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:30:29,998 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-04 05:30:29,998 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 104 flow [2023-08-04 05:30:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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) [2023-08-04 05:30:29,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:29,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:30:30,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 05:30:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 05:30:30,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:30:30,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash -383176461, now seen corresponding path program 1 times [2023-08-04 05:30:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49768284] [2023-08-04 05:30:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:30,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:30:30,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:30:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49768284] [2023-08-04 05:30:30,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49768284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:30:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069094905] [2023-08-04 05:30:30,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:30,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:30:30,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:30:30,263 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) [2023-08-04 05:30:30,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:30:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:30,349 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:30:30,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:30:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:30:30,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:30:30,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:30:30,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069094905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:30:30,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:30:30,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:30:30,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163094717] [2023-08-04 05:30:30,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:30:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:30:30,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:30:30,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:30:30,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:30:30,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 292 [2023-08-04 05:30:30,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-04 05:30:30,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:30:30,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 292 [2023-08-04 05:30:30,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:30:30,429 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 05:30:30,429 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:30:30,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 05:30:30,429 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 05:30:30,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 05:30:30,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:30:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:30:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-04 05:30:30,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777397260273973 [2023-08-04 05:30:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-04 05:30:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-04 05:30:30,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:30:30,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-04 05:30:30,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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) [2023-08-04 05:30:30,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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) [2023-08-04 05:30:30,434 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 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) [2023-08-04 05:30:30,434 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 104 flow. Second operand 4 states and 558 transitions. [2023-08-04 05:30:30,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 05:30:30,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:30:30,435 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 05:30:30,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 05:30:30,436 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -27 predicate places. [2023-08-04 05:30:30,436 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 05:30:30,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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) [2023-08-04 05:30:30,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:30:30,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:30:30,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:30:30,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 05:30:30,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:30:30,645 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 05:30:30,647 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:30:30,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:30:30,707 INFO L124 PetriNetUnfolderBase]: 62/939 cut-off events. [2023-08-04 05:30:30,708 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:30,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 939 events. 62/939 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5797 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 552. Up to 32 conditions per place. [2023-08-04 05:30:30,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 338 flow [2023-08-04 05:30:30,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 128 transitions, 276 flow [2023-08-04 05:30:30,710 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:30:30,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:30:30,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 128 transitions, 276 flow [2023-08-04 05:30:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 128 transitions, 276 flow [2023-08-04 05:30:30,735 INFO L124 PetriNetUnfolderBase]: 14/443 cut-off events. [2023-08-04 05:30:30,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:30,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 443 events. 14/443 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2020 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 304. Up to 16 conditions per place. [2023-08-04 05:30:30,738 INFO L119 LiptonReduction]: Number of co-enabled transitions 2252 [2023-08-04 05:30:33,529 INFO L134 LiptonReduction]: Checked pairs total: 5387 [2023-08-04 05:30:33,529 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-04 05:30:33,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:30:33,531 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;@48ff94c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:30:33,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:30:33,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:30:33,534 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 05:30:33,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:30:33,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:33,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:30:33,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:30:33,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1599587439, now seen corresponding path program 1 times [2023-08-04 05:30:33,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:33,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192847932] [2023-08-04 05:30:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:30:33,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:30:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:30:33,580 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:30:33,581 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:30:33,581 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:30:33,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:30:33,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:30:33,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:30:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 05:30:33,582 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:30:33,582 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:30:33,583 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:30:33,583 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:30:33,607 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:30:33,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:30:34,001 INFO L124 PetriNetUnfolderBase]: 282/4371 cut-off events. [2023-08-04 05:30:34,001 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:30:34,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 4371 events. 282/4371 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42583 event pairs, 0 based on Foata normal form. 0/3834 useless extension candidates. Maximal degree in co-relation 3139. Up to 162 conditions per place. [2023-08-04 05:30:34,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 191 transitions, 430 flow [2023-08-04 05:30:34,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 188 transitions, 412 flow [2023-08-04 05:30:34,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:30:34,030 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 188 transitions, 412 flow [2023-08-04 05:30:34,030 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 188 transitions, 412 flow [2023-08-04 05:30:34,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 188 transitions, 412 flow [2023-08-04 05:30:34,365 INFO L124 PetriNetUnfolderBase]: 282/4358 cut-off events. [2023-08-04 05:30:34,366 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 05:30:34,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4358 events. 282/4358 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42474 event pairs, 0 based on Foata normal form. 0/3821 useless extension candidates. Maximal degree in co-relation 3109. Up to 162 conditions per place. [2023-08-04 05:30:34,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 9600 [2023-08-04 05:30:37,694 INFO L134 LiptonReduction]: Checked pairs total: 28689 [2023-08-04 05:30:37,694 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-04 05:30:37,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:30:37,696 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;@48ff94c6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:30:37,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:30:37,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:30:37,700 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2023-08-04 05:30:37,700 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 05:30:37,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:30:37,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:30:37,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:30:37,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:30:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1263500076, now seen corresponding path program 1 times [2023-08-04 05:30:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:30:37,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119591529] [2023-08-04 05:30:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:30:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:30:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:30:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:30:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:30:37,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119591529] [2023-08-04 05:30:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119591529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:30:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:30:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:30:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787742407] [2023-08-04 05:30:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:30:37,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:30:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:30:37,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:30:37,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:30:37,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 333 [2023-08-04 05:30:37,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-08-04 05:30:37,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:30:37,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 333 [2023-08-04 05:30:37,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand