/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/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:05:59,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:05:59,453 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:05:59,455 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:05:59,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:05:59,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:05:59,456 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:05:59,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:05:59,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:05:59,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:05:59,486 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:05:59,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:05:59,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:05:59,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:05:59,487 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:05:59,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:05:59,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:05:59,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:05:59,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:05:59,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:05:59,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:05:59,490 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:05:59,490 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:05:59,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:05:59,491 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:05:59,491 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:05:59,491 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:05:59,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:05:59,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:05:59,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:05:59,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:59,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:05:59,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:05:59,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:05:59,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:05:59,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:05:59,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:05:59,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:05:59,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:05:59,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:05:59,494 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:05:59,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:05:59,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:05:59,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:05:59,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:05:59,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:05:59,747 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:05:59,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-04 04:06:00,824 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:06:01,057 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:06:01,058 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-04 04:06:01,073 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23923629/9ed2e59f820d4286ab16160ceb75c41f/FLAG91e8de613 [2023-08-04 04:06:01,082 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d23923629/9ed2e59f820d4286ab16160ceb75c41f [2023-08-04 04:06:01,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:06:01,084 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:06:01,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:06:01,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:06:01,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:06:01,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d44b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01, skipping insertion in model container [2023-08-04 04:06:01,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,121 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:06:01,418 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/goblint-regression_28-race_reach_86-lists_racing_bound2.i[47038,47051] [2023-08-04 04:06:01,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:06:01,518 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:06:01,540 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:06:01,542 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:06:01,549 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/goblint-regression_28-race_reach_86-lists_racing_bound2.i[47038,47051] [2023-08-04 04:06:01,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:06:01,610 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:06:01,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01 WrapperNode [2023-08-04 04:06:01,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:06:01,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:06:01,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:06:01,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:06:01,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,668 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-08-04 04:06:01,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:06:01,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:06:01,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:06:01,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:06:01,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,699 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,716 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:06:01,719 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:06:01,719 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:06:01,719 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:06:01,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (1/1) ... [2023-08-04 04:06:01,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:06:01,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:01,782 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 04:06:01,790 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 04:06:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:06:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:06:01,810 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-04 04:06:01,810 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-04 04:06:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:06:01,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:06:01,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:06:01,812 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 04:06:01,924 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:06:01,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:06:02,205 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:06:02,212 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:06:02,212 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-04 04:06:02,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:06:02 BoogieIcfgContainer [2023-08-04 04:06:02,213 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:06:02,215 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:06:02,215 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:06:02,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:06:02,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:06:01" (1/3) ... [2023-08-04 04:06:02,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f209a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:06:02, skipping insertion in model container [2023-08-04 04:06:02,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:06:01" (2/3) ... [2023-08-04 04:06:02,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f209a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:06:02, skipping insertion in model container [2023-08-04 04:06:02,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:06:02" (3/3) ... [2023-08-04 04:06:02,218 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-04 04:06:02,229 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:06:02,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:06:02,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:06:02,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:06:02,336 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 04:06:02,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-08-04 04:06:02,477 INFO L124 PetriNetUnfolderBase]: 54/435 cut-off events. [2023-08-04 04:06:02,477 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-04 04:06:02,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 435 events. 54/435 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1721 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-04 04:06:02,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-08-04 04:06:02,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 230 transitions, 474 flow [2023-08-04 04:06:02,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:06:02,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 230 transitions, 474 flow [2023-08-04 04:06:02,515 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 230 transitions, 474 flow [2023-08-04 04:06:02,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 230 transitions, 474 flow [2023-08-04 04:06:02,577 INFO L124 PetriNetUnfolderBase]: 50/422 cut-off events. [2023-08-04 04:06:02,577 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:06:02,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 422 events. 50/422 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1638 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2023-08-04 04:06:02,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 15822 [2023-08-04 04:06:07,511 INFO L134 LiptonReduction]: Checked pairs total: 26149 [2023-08-04 04:06:07,512 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-04 04:06:07,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:06:07,525 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;@24f95c6a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:06:07,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:06:07,531 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:06:07,531 INFO L124 PetriNetUnfolderBase]: 8/69 cut-off events. [2023-08-04 04:06:07,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:06:07,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:07,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:07,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:06:07,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1009720235, now seen corresponding path program 1 times [2023-08-04 04:06:07,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:07,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186334079] [2023-08-04 04:06:07,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:07,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:07,769 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 04:06:07,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:07,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186334079] [2023-08-04 04:06:07,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186334079] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:06:07,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:06:07,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:06:07,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506968816] [2023-08-04 04:06:07,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:06:07,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:06:07,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:06:07,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:06:07,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 417 [2023-08-04 04:06:07,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 04:06:07,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:07,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 417 [2023-08-04 04:06:07,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:08,351 INFO L124 PetriNetUnfolderBase]: 3305/5515 cut-off events. [2023-08-04 04:06:08,352 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-08-04 04:06:08,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 5515 events. 3305/5515 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30876 event pairs, 3078 based on Foata normal form. 276/4856 useless extension candidates. Maximal degree in co-relation 9713. Up to 5166 conditions per place. [2023-08-04 04:06:08,372 INFO L140 encePairwiseOnDemand]: 403/417 looper letters, 35 selfloop transitions, 2 changer transitions 14/54 dead transitions. [2023-08-04 04:06:08,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 220 flow [2023-08-04 04:06:08,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:06:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:06:08,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-04 04:06:08,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403677058353318 [2023-08-04 04:06:08,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-04 04:06:08,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-04 04:06:08,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:08,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-04 04:06:08,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 04:06:08,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:08,413 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:08,415 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 142 flow. Second operand 3 states and 676 transitions. [2023-08-04 04:06:08,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 220 flow [2023-08-04 04:06:08,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:06:08,425 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 101 flow [2023-08-04 04:06:08,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-04 04:06:08,432 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-04 04:06:08,432 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 101 flow [2023-08-04 04:06:08,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 04:06:08,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:08,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:06:08,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:06:08,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:08,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2048382885, now seen corresponding path program 1 times [2023-08-04 04:06:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:08,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763937689] [2023-08-04 04:06:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:08,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:08,578 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 04:06:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763937689] [2023-08-04 04:06:08,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763937689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:08,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154761202] [2023-08-04 04:06:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:08,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:08,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:08,582 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 04:06:08,619 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 04:06:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:08,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 04:06:08,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:08,724 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 04:06:08,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:06:08,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154761202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:06:08,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:06:08,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:06:08,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391132951] [2023-08-04 04:06:08,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:06:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:06:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:06:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:06:08,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 417 [2023-08-04 04:06:08,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 04:06:08,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:08,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 417 [2023-08-04 04:06:08,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:08,950 INFO L124 PetriNetUnfolderBase]: 1315/2228 cut-off events. [2023-08-04 04:06:08,950 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:06:08,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4422 conditions, 2228 events. 1315/2228 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11131 event pairs, 641 based on Foata normal form. 0/1868 useless extension candidates. Maximal degree in co-relation 4409. Up to 2128 conditions per place. [2023-08-04 04:06:08,957 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 43 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-08-04 04:06:08,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 211 flow [2023-08-04 04:06:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:06:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:06:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-08-04 04:06:08,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283772981614708 [2023-08-04 04:06:08,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-08-04 04:06:08,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-08-04 04:06:08,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:08,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-08-04 04:06:08,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 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 04:06:08,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:08,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:08,962 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 101 flow. Second operand 3 states and 661 transitions. [2023-08-04 04:06:08,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 211 flow [2023-08-04 04:06:08,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 207 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:06:08,964 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 105 flow [2023-08-04 04:06:08,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-04 04:06:08,964 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-08-04 04:06:08,964 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 105 flow [2023-08-04 04:06:08,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 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 04:06:08,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:08,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:08,986 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 04:06:09,165 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 04:06:09,166 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:06:09,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2116295868, now seen corresponding path program 1 times [2023-08-04 04:06:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665742795] [2023-08-04 04:06:09,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:09,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:09,302 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 04:06:09,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665742795] [2023-08-04 04:06:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665742795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993928333] [2023-08-04 04:06:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:09,317 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 04:06:09,319 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 04:06:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:09,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:06:09,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:09,445 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 04:06:09,445 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:06:09,467 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 04:06:09,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993928333] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:06:09,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:06:09,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-04 04:06:09,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882220743] [2023-08-04 04:06:09,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:06:09,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:06:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:06:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:06:09,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-04 04:06:09,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 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 04:06:09,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:09,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-04 04:06:09,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:09,738 INFO L124 PetriNetUnfolderBase]: 1315/2274 cut-off events. [2023-08-04 04:06:09,738 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 04:06:09,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4498 conditions, 2274 events. 1315/2274 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 11390 event pairs, 1216 based on Foata normal form. 3/1918 useless extension candidates. Maximal degree in co-relation 4470. Up to 2138 conditions per place. [2023-08-04 04:06:09,747 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 35 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-04 04:06:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 197 flow [2023-08-04 04:06:09,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:06:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:06:09,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2023-08-04 04:06:09,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063948840927258 [2023-08-04 04:06:09,751 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2023-08-04 04:06:09,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2023-08-04 04:06:09,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:09,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2023-08-04 04:06:09,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 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 04:06:09,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 04:06:09,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 04:06:09,757 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 105 flow. Second operand 6 states and 1267 transitions. [2023-08-04 04:06:09,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 197 flow [2023-08-04 04:06:09,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:06:09,760 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 137 flow [2023-08-04 04:06:09,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-04 04:06:09,761 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-08-04 04:06:09,761 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 137 flow [2023-08-04 04:06:09,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.0) internal successors, (1449), 7 states have internal predecessors, (1449), 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 04:06:09,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:09,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:09,769 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 04:06:09,966 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 04:06:09,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:06:09,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -687254416, now seen corresponding path program 2 times [2023-08-04 04:06:09,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:09,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710357182] [2023-08-04 04:06:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 04:06:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710357182] [2023-08-04 04:06:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710357182] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246375555] [2023-08-04 04:06:10,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:06:10,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:10,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:10,047 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 04:06:10,049 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 04:06:10,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:06:10,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:06:10,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:06:10,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:06:10,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:06:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:06:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246375555] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:06:10,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:06:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-04 04:06:10,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294142208] [2023-08-04 04:06:10,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:06:10,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-04 04:06:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:10,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-04 04:06:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-04 04:06:10,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 417 [2023-08-04 04:06:10,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 137 flow. Second operand has 14 states, 14 states have (on average 202.28571428571428) internal successors, (2832), 14 states have internal predecessors, (2832), 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 04:06:10,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:10,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 417 [2023-08-04 04:06:10,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:10,438 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2023-08-04 04:06:10,439 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-04 04:06:10,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 58 events. 17/58 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 155. Up to 34 conditions per place. [2023-08-04 04:06:10,443 INFO L140 encePairwiseOnDemand]: 412/417 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-04 04:06:10,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 198 flow [2023-08-04 04:06:10,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 04:06:10,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 04:06:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2840 transitions. [2023-08-04 04:06:10,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48646796848235696 [2023-08-04 04:06:10,453 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2840 transitions. [2023-08-04 04:06:10,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2840 transitions. [2023-08-04 04:06:10,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:10,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2840 transitions. [2023-08-04 04:06:10,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 202.85714285714286) internal successors, (2840), 14 states have internal predecessors, (2840), 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 04:06:10,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 417.0) internal successors, (6255), 15 states have internal predecessors, (6255), 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 04:06:10,467 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 417.0) internal successors, (6255), 15 states have internal predecessors, (6255), 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 04:06:10,467 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 137 flow. Second operand 14 states and 2840 transitions. [2023-08-04 04:06:10,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 198 flow [2023-08-04 04:06:10,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 182 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-04 04:06:10,468 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-04 04:06:10,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-04 04:06:10,469 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -14 predicate places. [2023-08-04 04:06:10,469 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-04 04:06:10,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 202.28571428571428) internal successors, (2832), 14 states have internal predecessors, (2832), 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 04:06:10,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:06:10,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:06:10,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 04:06:10,679 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 04:06:10,680 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-04 04:06:10,682 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:06:10,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-08-04 04:06:10,721 INFO L124 PetriNetUnfolderBase]: 54/435 cut-off events. [2023-08-04 04:06:10,721 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-04 04:06:10,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 435 events. 54/435 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1721 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 215. Up to 8 conditions per place. [2023-08-04 04:06:10,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-08-04 04:06:10,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 478 flow [2023-08-04 04:06:10,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:06:10,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 478 flow [2023-08-04 04:06:10,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 478 flow [2023-08-04 04:06:10,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 478 flow [2023-08-04 04:06:10,757 INFO L124 PetriNetUnfolderBase]: 50/423 cut-off events. [2023-08-04 04:06:10,758 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-04 04:06:10,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 423 events. 50/423 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1639 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 211. Up to 8 conditions per place. [2023-08-04 04:06:10,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 15880 [2023-08-04 04:06:15,754 INFO L134 LiptonReduction]: Checked pairs total: 24357 [2023-08-04 04:06:15,754 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-04 04:06:15,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:06:15,756 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;@24f95c6a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:06:15,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:06:15,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:06:15,759 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-08-04 04:06:15,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:06:15,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:15,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-04 04:06:15,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:06:15,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 819010612, now seen corresponding path program 1 times [2023-08-04 04:06:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44925865] [2023-08-04 04:06:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:15,793 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 04:06:15,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:15,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44925865] [2023-08-04 04:06:15,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44925865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:06:15,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:06:15,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:06:15,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752660293] [2023-08-04 04:06:15,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:06:15,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:06:15,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:06:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:06:15,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 417 [2023-08-04 04:06:15,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 04:06:15,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:15,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 417 [2023-08-04 04:06:15,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:16,169 INFO L124 PetriNetUnfolderBase]: 3305/5508 cut-off events. [2023-08-04 04:06:16,169 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-04 04:06:16,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10747 conditions, 5508 events. 3305/5508 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30725 event pairs, 3078 based on Foata normal form. 276/4849 useless extension candidates. Maximal degree in co-relation 9706. Up to 5166 conditions per place. [2023-08-04 04:06:16,182 INFO L140 encePairwiseOnDemand]: 403/417 looper letters, 38 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-08-04 04:06:16,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-08-04 04:06:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:06:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:06:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-04 04:06:16,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403677058353318 [2023-08-04 04:06:16,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-04 04:06:16,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-04 04:06:16,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:16,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-04 04:06:16,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 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 04:06:16,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:16,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 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 04:06:16,187 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 676 transitions. [2023-08-04 04:06:16,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-08-04 04:06:16,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:06:16,190 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-08-04 04:06:16,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-08-04 04:06:16,193 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-04 04:06:16,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-08-04 04:06:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 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 04:06:16,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:16,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:06:16,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:06:16,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2018159255, now seen corresponding path program 1 times [2023-08-04 04:06:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:16,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686735410] [2023-08-04 04:06:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:16,235 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 04:06:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:16,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686735410] [2023-08-04 04:06:16,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686735410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148778911] [2023-08-04 04:06:16,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:16,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:16,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:16,237 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:06:16,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:06:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:16,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:06:16,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:16,350 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 04:06:16,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:06:16,364 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 04:06:16,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148778911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:06:16,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:06:16,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-04 04:06:16,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208442342] [2023-08-04 04:06:16,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:06:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:06:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:16,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:06:16,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:06:16,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-04 04:06:16,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 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 04:06:16,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:16,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-04 04:06:16,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:16,580 INFO L124 PetriNetUnfolderBase]: 1331/2310 cut-off events. [2023-08-04 04:06:16,580 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 04:06:16,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 2310 events. 1331/2310 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 0/1961 useless extension candidates. Maximal degree in co-relation 4493. Up to 2152 conditions per place. [2023-08-04 04:06:16,590 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-08-04 04:06:16,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 210 flow [2023-08-04 04:06:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:06:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:06:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1270 transitions. [2023-08-04 04:06:16,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075939248601119 [2023-08-04 04:06:16,595 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1270 transitions. [2023-08-04 04:06:16,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1270 transitions. [2023-08-04 04:06:16,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:16,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1270 transitions. [2023-08-04 04:06:16,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 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 04:06:16,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 04:06:16,602 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 417.0) internal successors, (2919), 7 states have internal predecessors, (2919), 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 04:06:16,603 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1270 transitions. [2023-08-04 04:06:16,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 210 flow [2023-08-04 04:06:16,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:06:16,606 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-08-04 04:06:16,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-04 04:06:16,607 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-04 04:06:16,608 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-08-04 04:06:16,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 205.57142857142858) internal successors, (1439), 7 states have internal predecessors, (1439), 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 04:06:16,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:16,608 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-04 04:06:16,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 04:06:16,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:16,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:06:16,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -458210956, now seen corresponding path program 2 times [2023-08-04 04:06:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225603491] [2023-08-04 04:06:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:16,940 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:06:16,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:16,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225603491] [2023-08-04 04:06:16,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225603491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:16,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403607387] [2023-08-04 04:06:16,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:06:16,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:16,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:16,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:06:16,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 04:06:17,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:06:17,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:06:17,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:06:17,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:17,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:06:17,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:06:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:06:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403607387] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:06:17,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:06:17,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-04 04:06:17,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138873043] [2023-08-04 04:06:17,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:06:17,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 04:06:17,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:17,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 04:06:17,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-04 04:06:17,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-04 04:06:17,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 205.30769230769232) internal successors, (2669), 13 states have internal predecessors, (2669), 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 04:06:17,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:17,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-04 04:06:17,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:17,537 INFO L124 PetriNetUnfolderBase]: 1331/2316 cut-off events. [2023-08-04 04:06:17,537 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-04 04:06:17,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 2316 events. 1331/2316 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11213 event pairs, 1250 based on Foata normal form. 6/1974 useless extension candidates. Maximal degree in co-relation 4484. Up to 2152 conditions per place. [2023-08-04 04:06:17,552 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-08-04 04:06:17,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 278 flow [2023-08-04 04:06:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:06:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:06:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2503 transitions. [2023-08-04 04:06:17,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5001998401278976 [2023-08-04 04:06:17,559 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2503 transitions. [2023-08-04 04:06:17,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2503 transitions. [2023-08-04 04:06:17,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:17,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2503 transitions. [2023-08-04 04:06:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 208.58333333333334) internal successors, (2503), 12 states have internal predecessors, (2503), 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 04:06:17,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 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 04:06:17,576 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 417.0) internal successors, (5421), 13 states have internal predecessors, (5421), 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 04:06:17,576 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2503 transitions. [2023-08-04 04:06:17,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 278 flow [2023-08-04 04:06:17,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 264 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:06:17,579 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-08-04 04:06:17,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-04 04:06:17,580 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-04 04:06:17,581 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-08-04 04:06:17,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 205.30769230769232) internal successors, (2669), 13 states have internal predecessors, (2669), 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 04:06:17,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:17,582 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-04 04:06:17,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 04:06:17,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:17,788 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:06:17,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -691974828, now seen corresponding path program 3 times [2023-08-04 04:06:17,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:17,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133156019] [2023-08-04 04:06:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:06:18,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133156019] [2023-08-04 04:06:18,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133156019] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:18,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254306021] [2023-08-04 04:06:18,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:06:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:18,115 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:06:18,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 04:08:33,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-04 04:08:33,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:08:33,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-04 04:08:33,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:33,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254306021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:34,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:08:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-04 04:08:34,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909563648] [2023-08-04 04:08:34,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-04 04:08:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-04 04:08:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-04 04:08:34,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-04 04:08:34,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 214 flow. Second operand has 25 states, 25 states have (on average 205.16) internal successors, (5129), 25 states have internal predecessors, (5129), 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 04:08:34,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:34,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-04 04:08:34,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:34,553 INFO L124 PetriNetUnfolderBase]: 1331/2328 cut-off events. [2023-08-04 04:08:34,554 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-04 04:08:34,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 2328 events. 1331/2328 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 12/1992 useless extension candidates. Maximal degree in co-relation 4490. Up to 2152 conditions per place. [2023-08-04 04:08:34,566 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-04 04:08:34,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 432 flow [2023-08-04 04:08:34,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-04 04:08:34,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-04 04:08:34,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4969 transitions. [2023-08-04 04:08:34,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49650279776179057 [2023-08-04 04:08:34,578 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4969 transitions. [2023-08-04 04:08:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4969 transitions. [2023-08-04 04:08:34,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:34,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4969 transitions. [2023-08-04 04:08:34,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 207.04166666666666) internal successors, (4969), 24 states have internal predecessors, (4969), 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 04:08:34,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 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 04:08:34,603 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 417.0) internal successors, (10425), 25 states have internal predecessors, (10425), 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 04:08:34,603 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4969 transitions. [2023-08-04 04:08:34,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 432 flow [2023-08-04 04:08:34,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 360 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-04 04:08:34,605 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-08-04 04:08:34,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2023-08-04 04:08:34,606 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-08-04 04:08:34,606 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-08-04 04:08:34,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 205.16) internal successors, (5129), 25 states have internal predecessors, (5129), 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 04:08:34,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:34,607 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-04 04:08:34,635 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 04:08:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:34,833 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:08:34,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash 445656340, now seen corresponding path program 4 times [2023-08-04 04:08:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:34,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119758710] [2023-08-04 04:08:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:35,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:35,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119758710] [2023-08-04 04:08:35,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119758710] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:08:35,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047904740] [2023-08-04 04:08:35,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 04:08:35,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:35,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:35,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:08:35,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 04:08:36,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 04:08:36,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:08:36,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-04 04:08:36,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:36,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:36,689 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:36,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047904740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:36,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:08:36,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-04 04:08:36,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95799426] [2023-08-04 04:08:36,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-04 04:08:36,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:36,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-04 04:08:36,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-04 04:08:36,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-04 04:08:36,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 334 flow. Second operand has 49 states, 49 states have (on average 205.08163265306123) internal successors, (10049), 49 states have internal predecessors, (10049), 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 04:08:36,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:36,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-04 04:08:36,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:37,287 INFO L124 PetriNetUnfolderBase]: 1331/2352 cut-off events. [2023-08-04 04:08:37,287 INFO L125 PetriNetUnfolderBase]: For 5241/5241 co-relation queries the response was YES. [2023-08-04 04:08:37,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4771 conditions, 2352 events. 1331/2352 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11222 event pairs, 1250 based on Foata normal form. 24/2028 useless extension candidates. Maximal degree in co-relation 4502. Up to 2152 conditions per place. [2023-08-04 04:08:37,301 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-08-04 04:08:37,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 696 flow [2023-08-04 04:08:37,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-04 04:08:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-04 04:08:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9901 transitions. [2023-08-04 04:08:37,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494654276578737 [2023-08-04 04:08:37,315 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9901 transitions. [2023-08-04 04:08:37,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9901 transitions. [2023-08-04 04:08:37,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:37,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9901 transitions. [2023-08-04 04:08:37,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 206.27083333333334) internal successors, (9901), 48 states have internal predecessors, (9901), 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 04:08:37,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 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 04:08:37,349 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 417.0) internal successors, (20433), 49 states have internal predecessors, (20433), 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 04:08:37,350 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9901 transitions. [2023-08-04 04:08:37,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 696 flow [2023-08-04 04:08:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 552 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-04 04:08:37,354 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-08-04 04:08:37,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=417, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=574, PETRI_PLACES=163, PETRI_TRANSITIONS=91} [2023-08-04 04:08:37,355 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-08-04 04:08:37,355 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-08-04 04:08:37,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 205.08163265306123) internal successors, (10049), 49 states have internal predecessors, (10049), 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 04:08:37,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:37,357 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-04 04:08:37,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 04:08:37,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:37,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:08:37,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1888940908, now seen corresponding path program 5 times [2023-08-04 04:08:37,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:37,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288199326] [2023-08-04 04:08:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:37,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:08:40,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:40,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288199326] [2023-08-04 04:08:40,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288199326] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:08:40,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717481144] [2023-08-04 04:08:40,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 04:08:40,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:40,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:08:40,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-08-04 04:20:37,192 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 04:20:37,192 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 04:20:38,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-04 04:20:38,399 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-08-04 04:20:38,431 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:20:38,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:20:38,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-04 04:20:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828681164] [2023-08-04 04:20:38,432 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-04 04:20:38,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-04 04:20:38,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:20:38,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-04 04:20:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-04 04:20:38,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-08-04 04:20:38,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 04:20:38,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:20:38,442 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 04:20:38,442 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 04:20:38,442 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-04 04:20:38,443 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2023-08-04 04:20:38,444 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 04:20:38,444 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:20:38,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:20:38 BasicIcfg [2023-08-04 04:20:38,447 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:20:38,447 INFO L158 Benchmark]: Toolchain (without parser) took 877362.84ms. Allocated memory was 329.3MB in the beginning and 610.3MB in the end (delta: 281.0MB). Free memory was 281.0MB in the beginning and 537.9MB in the end (delta: -256.9MB). Peak memory consumption was 27.1MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,447 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 329.3MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:20:38,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.09ms. Allocated memory is still 329.3MB. Free memory was 281.0MB in the beginning and 244.3MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,448 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.78ms. Allocated memory is still 329.3MB. Free memory was 244.3MB in the beginning and 241.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,448 INFO L158 Benchmark]: Boogie Preprocessor took 49.93ms. Allocated memory is still 329.3MB. Free memory was 241.1MB in the beginning and 238.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,448 INFO L158 Benchmark]: RCFGBuilder took 494.39ms. Allocated memory was 329.3MB in the beginning and 396.4MB in the end (delta: 67.1MB). Free memory was 238.9MB in the beginning and 344.3MB in the end (delta: -105.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,449 INFO L158 Benchmark]: TraceAbstraction took 876231.95ms. Allocated memory was 396.4MB in the beginning and 610.3MB in the end (delta: 213.9MB). Free memory was 343.2MB in the beginning and 537.9MB in the end (delta: -194.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. [2023-08-04 04:20:38,451 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 329.3MB. Free memory is still 285.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 527.09ms. Allocated memory is still 329.3MB. Free memory was 281.0MB in the beginning and 244.3MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.78ms. Allocated memory is still 329.3MB. Free memory was 244.3MB in the beginning and 241.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.93ms. Allocated memory is still 329.3MB. Free memory was 241.1MB in the beginning and 238.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 494.39ms. Allocated memory was 329.3MB in the beginning and 396.4MB in the end (delta: 67.1MB). Free memory was 238.9MB in the beginning and 344.3MB in the end (delta: -105.4MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. * TraceAbstraction took 876231.95ms. Allocated memory was 396.4MB in the beginning and 610.3MB in the end (delta: 213.9MB). Free memory was 343.2MB in the beginning and 537.9MB in the end (delta: -194.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 212 PlacesBefore, 53 PlacesAfterwards, 230 TransitionsBefore, 64 TransitionsAfterwards, 15822 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 26149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13423, independent: 13035, independent conditional: 0, independent unconditional: 13035, dependent: 388, dependent conditional: 0, dependent unconditional: 388, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8005, independent: 7917, independent conditional: 0, independent unconditional: 7917, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13423, independent: 5118, independent conditional: 0, independent unconditional: 5118, dependent: 300, dependent conditional: 0, dependent unconditional: 300, unknown: 8005, unknown conditional: 0, unknown unconditional: 8005] , Statistics on independence cache: Total cache size (in pairs): 319, Positive cache size: 285, Positive conditional cache size: 0, Positive unconditional cache size: 285, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 213 PlacesBefore, 54 PlacesAfterwards, 231 TransitionsBefore, 65 TransitionsAfterwards, 15880 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 24357 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13386, independent: 13051, independent conditional: 0, independent unconditional: 13051, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8126, independent: 8025, independent conditional: 0, independent unconditional: 8025, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13386, independent: 5026, independent conditional: 0, independent unconditional: 5026, dependent: 234, dependent conditional: 0, dependent unconditional: 234, unknown: 8126, unknown conditional: 0, unknown unconditional: 8126] , Statistics on independence cache: Total cache size (in pairs): 426, Positive cache size: 387, Positive conditional cache size: 0, Positive unconditional cache size: 387, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 323 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: 8.3s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 528 IncrementalHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 2 mSDtfsCounter, 528 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 323 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: 867.8s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 344 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 307 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1304 IncrementalHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 1 mSDtfsCounter, 1304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred in iteration=5, InterpolantAutomatonStates: 93, 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: 0.2s SsaConstructionTime, 136.0s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown