/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:39:40,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:39:40,518 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:39:40,522 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:39:40,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:39:40,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:39:40,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:39:40,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:39:40,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:39:40,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:39:40,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:39:40,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:39:40,542 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:39:40,542 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:39:40,542 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:39:40,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:39:40,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:39:40,544 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:39:40,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:39:40,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:39:40,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:39:40,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:39:40,549 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:39:40,549 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:39:40,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:39:40,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:39:40,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:39:40,550 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:39:40,550 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:39:40,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:39:40,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:39:40,551 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:39:40,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:39:40,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:39:40,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:39:40,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:39:40,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:39:40,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:39:40,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:39:40,554 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:39:40,554 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:39:40,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:39:40,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:39:40,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:39:40,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:39:40,779 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:39:40,779 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:39:40,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-03 21:39:41,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:39:42,180 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:39:42,181 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-03 21:39:42,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dba5a085/766ae6e55f3c41819ba6f6fc2e06a1fa/FLAG89b12698f [2023-08-03 21:39:42,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dba5a085/766ae6e55f3c41819ba6f6fc2e06a1fa [2023-08-03 21:39:42,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:39:42,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:39:42,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:39:42,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:39:42,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:39:42,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:42,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41712e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42, skipping insertion in model container [2023-08-03 21:39:42,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:42,270 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:39:42,667 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] [2023-08-03 21:39:42,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:39:42,807 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:39:42,826 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-03 21:39:42,828 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-03 21:39:42,846 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] [2023-08-03 21:39:42,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:39:42,914 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:39:42,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42 WrapperNode [2023-08-03 21:39:42,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:39:42,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:39:42,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:39:42,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:39:42,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:42,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:42,989 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 232 [2023-08-03 21:39:42,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:39:42,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:39:42,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:39:42,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:39:43,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,021 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,070 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:39:43,071 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:39:43,071 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:39:43,071 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:39:43,072 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (1/1) ... [2023-08-03 21:39:43,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:39:43,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:39:43,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 21:39:43,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 21:39:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:39:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 21:39:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-03 21:39:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-03 21:39:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:39:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:39:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-03 21:39:43,165 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-03 21:39:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:39:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:39:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 21:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:39:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:39:43,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:39:43,168 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:39:43,365 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:39:43,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:39:43,731 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:39:43,738 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:39:43,738 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 21:39:43,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:39:43 BoogieIcfgContainer [2023-08-03 21:39:43,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:39:43,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:39:43,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:39:43,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:39:43,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:39:42" (1/3) ... [2023-08-03 21:39:43,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:39:43, skipping insertion in model container [2023-08-03 21:39:43,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:42" (2/3) ... [2023-08-03 21:39:43,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f5dee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:39:43, skipping insertion in model container [2023-08-03 21:39:43,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:39:43" (3/3) ... [2023-08-03 21:39:43,749 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_86-lists_racing_bound2.i [2023-08-03 21:39:43,756 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:39:43,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:39:43,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:39:43,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:39:43,877 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:39:43,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 233 transitions, 488 flow [2023-08-03 21:39:44,055 INFO L124 PetriNetUnfolderBase]: 54/435 cut-off events. [2023-08-03 21:39:44,056 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-03 21:39:44,073 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. [2023-08-03 21:39:44,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 233 transitions, 488 flow [2023-08-03 21:39:44,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 231 transitions, 478 flow [2023-08-03 21:39:44,088 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:39:44,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 231 transitions, 478 flow [2023-08-03 21:39:44,102 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 231 transitions, 478 flow [2023-08-03 21:39:44,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 231 transitions, 478 flow [2023-08-03 21:39:44,190 INFO L124 PetriNetUnfolderBase]: 50/423 cut-off events. [2023-08-03 21:39:44,190 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-03 21:39:44,193 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. [2023-08-03 21:39:44,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 15880 [2023-08-03 21:39:49,632 INFO L134 LiptonReduction]: Checked pairs total: 24331 [2023-08-03 21:39:49,633 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-03 21:39:49,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:39:49,648 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;@6bb0c887, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:39:49,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 21:39:49,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:39:49,654 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-08-03 21:39:49,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:39:49,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:39:49,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:39:49,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:39:49,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:39:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -438899358, now seen corresponding path program 1 times [2023-08-03 21:39:49,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:39:49,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633758387] [2023-08-03 21:39:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:39:49,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:39:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:39:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:49,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:39:49,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633758387] [2023-08-03 21:39:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633758387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:39:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:39:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:39:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196958914] [2023-08-03 21:39:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:39:49,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:39:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:39:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:39:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:39:49,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 417 [2023-08-03 21:39:49,919 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) [2023-08-03 21:39:49,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:39:49,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 417 [2023-08-03 21:39:49,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:39:50,562 INFO L124 PetriNetUnfolderBase]: 3305/5516 cut-off events. [2023-08-03 21:39:50,562 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-08-03 21:39:50,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10754 conditions, 5516 events. 3305/5516 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 30891 event pairs, 3078 based on Foata normal form. 276/4857 useless extension candidates. Maximal degree in co-relation 9713. Up to 5166 conditions per place. [2023-08-03 21:39:50,577 INFO L140 encePairwiseOnDemand]: 403/417 looper letters, 38 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-08-03 21:39:50,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-08-03 21:39:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:39:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:39:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-03 21:39:50,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403677058353318 [2023-08-03 21:39:50,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-03 21:39:50,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-03 21:39:50,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:39:50,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-03 21:39:50,618 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) [2023-08-03 21:39:50,624 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) [2023-08-03 21:39:50,625 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) [2023-08-03 21:39:50,626 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 676 transitions. [2023-08-03 21:39:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-08-03 21:39:50,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:39:50,635 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-08-03 21:39:50,636 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} [2023-08-03 21:39:50,640 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 21:39:50,641 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-08-03 21:39:50,641 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) [2023-08-03 21:39:50,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:39:50,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-03 21:39:50,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:39:50,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:39:50,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:39:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1830623665, now seen corresponding path program 1 times [2023-08-03 21:39:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:39:50,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127979274] [2023-08-03 21:39:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:39:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:39:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:39:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:50,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:39:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127979274] [2023-08-03 21:39:50,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127979274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:39:50,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834318562] [2023-08-03 21:39:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:39:50,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:39:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:39:50,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:39:50,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:39:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:39:50,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:39:50,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:39:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:50,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:39:50,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:50,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834318562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:39:50,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:39:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-03 21:39:50,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325809558] [2023-08-03 21:39:50,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:39:50,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 21:39:50,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:39:50,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 21:39:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-03 21:39:51,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-03 21:39:51,005 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) [2023-08-03 21:39:51,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:39:51,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-03 21:39:51,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:39:51,299 INFO L124 PetriNetUnfolderBase]: 1331/2313 cut-off events. [2023-08-03 21:39:51,299 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 21:39:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2313 events. 1331/2313 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11273 event pairs, 1250 based on Foata normal form. 0/1964 useless extension candidates. Maximal degree in co-relation 4495. Up to 2152 conditions per place. [2023-08-03 21:39:51,313 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-08-03 21:39:51,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 210 flow [2023-08-03 21:39:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:39:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:39:51,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1270 transitions. [2023-08-03 21:39:51,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075939248601119 [2023-08-03 21:39:51,323 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1270 transitions. [2023-08-03 21:39:51,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1270 transitions. [2023-08-03 21:39:51,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:39:51,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1270 transitions. [2023-08-03 21:39:51,326 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) [2023-08-03 21:39:51,330 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) [2023-08-03 21:39:51,331 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) [2023-08-03 21:39:51,331 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1270 transitions. [2023-08-03 21:39:51,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 210 flow [2023-08-03 21:39:51,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:39:51,334 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-08-03 21:39:51,334 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} [2023-08-03 21:39:51,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-03 21:39:51,335 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-08-03 21:39:51,336 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) [2023-08-03 21:39:51,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:39:51,337 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:39:51,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:39:51,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:39:51,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:39:51,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:39:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash -981188446, now seen corresponding path program 2 times [2023-08-03 21:39:51,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:39:51,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900261939] [2023-08-03 21:39:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:39:51,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:39:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:39:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:39:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900261939] [2023-08-03 21:39:51,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900261939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:39:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708622217] [2023-08-03 21:39:51,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:39:51,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:39:51,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:39:51,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:39:51,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:39:51,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:39:51,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:39:51,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 21:39:51,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:39:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:51,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:39:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:52,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708622217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:39:52,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:39:52,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 21:39:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137850197] [2023-08-03 21:39:52,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:39:52,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 21:39:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:39:52,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 21:39:52,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-03 21:39:52,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-03 21:39:52,092 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) [2023-08-03 21:39:52,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:39:52,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-03 21:39:52,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:39:52,492 INFO L124 PetriNetUnfolderBase]: 1331/2319 cut-off events. [2023-08-03 21:39:52,493 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-03 21:39:52,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4545 conditions, 2319 events. 1331/2319 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11280 event pairs, 1250 based on Foata normal form. 6/1977 useless extension candidates. Maximal degree in co-relation 4486. Up to 2152 conditions per place. [2023-08-03 21:39:52,506 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-08-03 21:39:52,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 278 flow [2023-08-03 21:39:52,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 21:39:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 21:39:52,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2503 transitions. [2023-08-03 21:39:52,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5001998401278976 [2023-08-03 21:39:52,512 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2503 transitions. [2023-08-03 21:39:52,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2503 transitions. [2023-08-03 21:39:52,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:39:52,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2503 transitions. [2023-08-03 21:39:52,518 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) [2023-08-03 21:39:52,525 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) [2023-08-03 21:39:52,529 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) [2023-08-03 21:39:52,529 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2503 transitions. [2023-08-03 21:39:52,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 278 flow [2023-08-03 21:39:52,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 264 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 21:39:52,533 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-08-03 21:39:52,534 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} [2023-08-03 21:39:52,536 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-03 21:39:52,536 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-08-03 21:39:52,539 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) [2023-08-03 21:39:52,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:39:52,539 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-03 21:39:52,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:39:52,747 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 [2023-08-03 21:39:52,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:39:52,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:39:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1179815550, now seen corresponding path program 3 times [2023-08-03 21:39:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:39:52,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809617216] [2023-08-03 21:39:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:39:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:39:52,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:39:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:39:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:39:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809617216] [2023-08-03 21:39:53,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809617216] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:39:53,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274588594] [2023-08-03 21:39:53,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 21:39:53,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:39:53,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:39:53,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:39:53,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 21:43:43,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-03 21:43:43,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:43:43,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 21:43:43,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:43,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:43,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274588594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:43,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:43:43,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-03 21:43:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96306923] [2023-08-03 21:43:43,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:44,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-03 21:43:44,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-03 21:43:44,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-03 21:43:44,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-03 21:43:44,107 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) [2023-08-03 21:43:44,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:44,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-03 21:43:44,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:44,513 INFO L124 PetriNetUnfolderBase]: 1331/2331 cut-off events. [2023-08-03 21:43:44,513 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-03 21:43:44,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4629 conditions, 2331 events. 1331/2331 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11277 event pairs, 1250 based on Foata normal form. 12/1995 useless extension candidates. Maximal degree in co-relation 4492. Up to 2152 conditions per place. [2023-08-03 21:43:44,527 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-03 21:43:44,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 432 flow [2023-08-03 21:43:44,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 21:43:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 21:43:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4969 transitions. [2023-08-03 21:43:44,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49650279776179057 [2023-08-03 21:43:44,540 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4969 transitions. [2023-08-03 21:43:44,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4969 transitions. [2023-08-03 21:43:44,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:44,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4969 transitions. [2023-08-03 21:43:44,552 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) [2023-08-03 21:43:44,567 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) [2023-08-03 21:43:44,570 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) [2023-08-03 21:43:44,570 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4969 transitions. [2023-08-03 21:43:44,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 432 flow [2023-08-03 21:43:44,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 360 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-03 21:43:44,574 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-08-03 21:43:44,575 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} [2023-08-03 21:43:44,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-08-03 21:43:44,576 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-08-03 21:43:44,579 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) [2023-08-03 21:43:44,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:44,580 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-03 21:43:44,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 21:43:44,801 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 [2023-08-03 21:43:44,801 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:44,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:44,801 INFO L85 PathProgramCache]: Analyzing trace with hash -500343998, now seen corresponding path program 4 times [2023-08-03 21:43:44,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:44,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761179174] [2023-08-03 21:43:44,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:44,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:43:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:45,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761179174] [2023-08-03 21:43:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761179174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:43:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224259935] [2023-08-03 21:43:45,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 21:43:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:45,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:45,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 21:43:45,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 21:43:46,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 21:43:46,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:43:46,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 21:43:46,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:46,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224259935] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:47,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:43:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-03 21:43:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887261340] [2023-08-03 21:43:47,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-03 21:43:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-03 21:43:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-03 21:43:47,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 417 [2023-08-03 21:43:47,277 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) [2023-08-03 21:43:47,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:47,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 417 [2023-08-03 21:43:47,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:47,856 INFO L124 PetriNetUnfolderBase]: 1331/2355 cut-off events. [2023-08-03 21:43:47,856 INFO L125 PetriNetUnfolderBase]: For 5241/5241 co-relation queries the response was YES. [2023-08-03 21:43:47,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 2355 events. 1331/2355 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11279 event pairs, 1250 based on Foata normal form. 24/2031 useless extension candidates. Maximal degree in co-relation 4504. Up to 2152 conditions per place. [2023-08-03 21:43:47,872 INFO L140 encePairwiseOnDemand]: 414/417 looper letters, 38 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-08-03 21:43:47,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 696 flow [2023-08-03 21:43:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-03 21:43:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-03 21:43:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9901 transitions. [2023-08-03 21:43:47,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494654276578737 [2023-08-03 21:43:47,895 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9901 transitions. [2023-08-03 21:43:47,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9901 transitions. [2023-08-03 21:43:47,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:47,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9901 transitions. [2023-08-03 21:43:47,918 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) [2023-08-03 21:43:47,945 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) [2023-08-03 21:43:47,950 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) [2023-08-03 21:43:47,950 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9901 transitions. [2023-08-03 21:43:47,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 696 flow [2023-08-03 21:43:47,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 552 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-03 21:43:47,959 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-08-03 21:43:47,959 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} [2023-08-03 21:43:47,961 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-08-03 21:43:47,961 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-08-03 21:43:47,963 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) [2023-08-03 21:43:47,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:47,963 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-03 21:43:47,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 21:43:48,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:48,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:48,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash -584364350, now seen corresponding path program 5 times [2023-08-03 21:43:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137192744] [2023-08-03 21:43:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:43:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137192744] [2023-08-03 21:43:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137192744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:43:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738084020] [2023-08-03 21:43:51,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 21:43:51,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:51,731 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) [2023-08-03 21:43:51,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-03 21:54:15,825 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:54:15,825 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:54:16,836 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 [2023-08-03 21:54:17,026 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-03 21:54:17,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-03 21:54:17,056 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:54:17,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:54:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-03 21:54:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320536308] [2023-08-03 21:54:17,056 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-03 21:54:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-03 21:54:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:54:17,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-03 21:54:17,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-03 21:54:17,062 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 21:54:17,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:54:17,063 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 21:54:17,064 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 21:54:17,064 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-03 21:54:17,068 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-08-03 21:54:17,070 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 21:54:17,070 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:54:17,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:54:17 BasicIcfg [2023-08-03 21:54:17,072 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:54:17,073 INFO L158 Benchmark]: Toolchain (without parser) took 874859.46ms. Allocated memory was 343.9MB in the beginning and 593.5MB in the end (delta: 249.6MB). Free memory was 291.4MB in the beginning and 414.9MB in the end (delta: -123.5MB). Peak memory consumption was 127.6MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,073 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory was 292.9MB in the beginning and 292.8MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:54:17,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.26ms. Allocated memory is still 343.9MB. Free memory was 291.0MB in the beginning and 253.7MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.58ms. Allocated memory is still 343.9MB. Free memory was 253.7MB in the beginning and 250.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,074 INFO L158 Benchmark]: Boogie Preprocessor took 79.83ms. Allocated memory was 343.9MB in the beginning and 480.2MB in the end (delta: 136.3MB). Free memory was 250.7MB in the beginning and 449.9MB in the end (delta: -199.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,074 INFO L158 Benchmark]: RCFGBuilder took 669.74ms. Allocated memory is still 480.2MB. Free memory was 449.9MB in the beginning and 423.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,075 INFO L158 Benchmark]: TraceAbstraction took 873329.38ms. Allocated memory was 480.2MB in the beginning and 593.5MB in the end (delta: 113.2MB). Free memory was 423.7MB in the beginning and 414.9MB in the end (delta: 8.7MB). Peak memory consumption was 120.9MB. Max. memory is 16.0GB. [2023-08-03 21:54:17,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory was 292.9MB in the beginning and 292.8MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 702.26ms. Allocated memory is still 343.9MB. Free memory was 291.0MB in the beginning and 253.7MB in the end (delta: 37.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 72.58ms. Allocated memory is still 343.9MB. Free memory was 253.7MB in the beginning and 250.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 79.83ms. Allocated memory was 343.9MB in the beginning and 480.2MB in the end (delta: 136.3MB). Free memory was 250.7MB in the beginning and 449.9MB in the end (delta: -199.2MB). Peak memory consumption was 8.8MB. Max. memory is 16.0GB. * RCFGBuilder took 669.74ms. Allocated memory is still 480.2MB. Free memory was 449.9MB in the beginning and 423.7MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 873329.38ms. Allocated memory was 480.2MB in the beginning and 593.5MB in the end (delta: 113.2MB). Free memory was 423.7MB in the beginning and 414.9MB in the end (delta: 8.7MB). Peak memory consumption was 120.9MB. 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: 5.5s, 213 PlacesBefore, 54 PlacesAfterwards, 231 TransitionsBefore, 65 TransitionsAfterwards, 15880 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 112 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 184 TotalNumberOfCompositions, 24331 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13248, independent: 12914, independent conditional: 0, independent unconditional: 12914, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8063, independent: 7976, independent conditional: 0, independent unconditional: 7976, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 13248, independent: 4938, independent conditional: 0, independent unconditional: 4938, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 8063, unknown conditional: 0, unknown unconditional: 8063] , Statistics on independence cache: Total cache size (in pairs): 343, Positive cache size: 309, Positive conditional cache size: 0, Positive unconditional cache size: 309, 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 - 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 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: 873.2s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 344 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 307 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.8s 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, 1.9s 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, 231.0s SatisfiabilityAnalysisTime, 6.2s 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