/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_93-evilcollapse_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:42:34,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:42:34,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:42:34,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:42:34,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:42:34,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:42:34,648 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:42:34,677 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:42:34,678 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:42:34,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:42:34,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:42:34,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:42:34,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:42:34,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:42:34,685 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:42:34,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:42:34,686 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:42:34,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:42:34,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:42:34,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:42:34,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:42:34,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:42:34,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:42:34,687 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:42:34,688 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:42:34,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:42:34,688 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:42:34,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:42:34,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:42:34,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:42:34,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:42:34,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:42:34,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:42:34,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:42:34,691 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:42:34,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:42:34,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:42:34,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:42:34,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:42:34,939 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:42:34,939 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:42:34,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-03 21:42:36,159 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:42:36,400 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:42:36,400 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-03 21:42:36,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad681a59b/e4c51b97176949f99c2aab0e6d2a178d/FLAG8527c1e34 [2023-08-03 21:42:36,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad681a59b/e4c51b97176949f99c2aab0e6d2a178d [2023-08-03 21:42:36,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:42:36,440 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:42:36,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:42:36,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:42:36,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:42:36,444 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:42:36" (1/1) ... [2023-08-03 21:42:36,445 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@636625c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:36, skipping insertion in model container [2023-08-03 21:42:36,445 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:42:36" (1/1) ... [2023-08-03 21:42:36,500 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:42:36,889 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_93-evilcollapse_racefree_bound2.i[47038,47051] [2023-08-03 21:42:36,902 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:36,903 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:36,903 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:36,904 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:36,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:42:36,958 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:42:36,986 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:42:36,988 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:42:37,007 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_93-evilcollapse_racefree_bound2.i[47038,47051] [2023-08-03 21:42:37,012 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:37,013 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:37,014 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:37,014 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:42:37,038 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: long [1084] [2023-08-03 21:42:37,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:42:37,086 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:42:37,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37 WrapperNode [2023-08-03 21:42:37,087 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:42:37,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:42:37,088 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:42:37,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:42:37,094 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,110 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,136 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 228 [2023-08-03 21:42:37,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:42:37,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:42:37,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:42:37,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:42:37,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,161 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,168 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,169 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:42:37,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:42:37,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:42:37,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:42:37,189 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (1/1) ... [2023-08-03 21:42:37,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:42:37,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:42:37,229 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 21:42:37,249 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 21:42:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:42:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:42:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:42:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 21:42:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:42:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:42:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:42:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:42:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:42:37,268 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 21:42:37,409 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:42:37,411 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:42:37,700 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:42:37,711 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:42:37,711 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 21:42:37,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:42:37 BoogieIcfgContainer [2023-08-03 21:42:37,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:42:37,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:42:37,716 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:42:37,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:42:37,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:42:36" (1/3) ... [2023-08-03 21:42:37,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa26d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:42:37, skipping insertion in model container [2023-08-03 21:42:37,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:42:37" (2/3) ... [2023-08-03 21:42:37,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa26d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:42:37, skipping insertion in model container [2023-08-03 21:42:37,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:42:37" (3/3) ... [2023-08-03 21:42:37,725 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_93-evilcollapse_racefree_bound2.i [2023-08-03 21:42:37,732 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:42:37,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:42:37,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:42:37,739 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:42:37,811 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:42:37,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 237 transitions, 482 flow [2023-08-03 21:42:37,915 INFO L124 PetriNetUnfolderBase]: 29/253 cut-off events. [2023-08-03 21:42:37,915 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 21:42:37,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 253 events. 29/253 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 514 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-03 21:42:37,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 237 transitions, 482 flow [2023-08-03 21:42:37,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 232 transitions, 469 flow [2023-08-03 21:42:37,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:42:37,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 232 transitions, 469 flow [2023-08-03 21:42:37,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 232 transitions, 469 flow [2023-08-03 21:42:37,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 232 transitions, 469 flow [2023-08-03 21:42:38,008 INFO L124 PetriNetUnfolderBase]: 28/248 cut-off events. [2023-08-03 21:42:38,008 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:42:38,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 248 events. 28/248 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 471 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 138. Up to 4 conditions per place. [2023-08-03 21:42:38,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-08-03 21:42:51,723 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:43:02,308 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:43:08,255 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:43:08,403 INFO L134 LiptonReduction]: Checked pairs total: 3403 [2023-08-03 21:43:08,404 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-03 21:43:08,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:43:08,430 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;@4a396fed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:43:08,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:43:08,447 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:43:08,448 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-03 21:43:08,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:43:08,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:08,448 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:43:08,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:08,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1537475574, now seen corresponding path program 1 times [2023-08-03 21:43:08,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:08,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62866742] [2023-08-03 21:43:08,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:43:08,803 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 21:43:08,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:08,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62866742] [2023-08-03 21:43:08,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62866742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:43:08,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:43:08,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:43:08,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656194178] [2023-08-03 21:43:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:43:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:43:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:43:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:43:08,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 478 [2023-08-03 21:43:08,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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 21:43:08,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:08,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 478 [2023-08-03 21:43:08,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:09,063 INFO L124 PetriNetUnfolderBase]: 48/112 cut-off events. [2023-08-03 21:43:09,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:43:09,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 112 events. 48/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 8/92 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-03 21:43:09,065 INFO L140 encePairwiseOnDemand]: 465/478 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 21:43:09,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-03 21:43:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:43:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:43:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 666 transitions. [2023-08-03 21:43:09,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46443514644351463 [2023-08-03 21:43:09,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 666 transitions. [2023-08-03 21:43:09,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 666 transitions. [2023-08-03 21:43:09,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:09,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 666 transitions. [2023-08-03 21:43:09,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:43:09,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 21:43:09,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 21:43:09,099 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 666 transitions. [2023-08-03 21:43:09,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-03 21:43:09,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:43:09,103 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-08-03 21:43:09,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-03 21:43:09,108 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-03 21:43:09,108 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-08-03 21:43:09,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 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 21:43:09,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:09,109 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:43:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:43:09,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:09,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:09,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1411218360, now seen corresponding path program 1 times [2023-08-03 21:43:09,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:09,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518839233] [2023-08-03 21:43:09,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:09,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:43:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:09,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518839233] [2023-08-03 21:43:09,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518839233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:43:09,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:43:09,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:43:09,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018174453] [2023-08-03 21:43:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:43:09,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:43:09,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:09,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:43:09,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:43:09,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 478 [2023-08-03 21:43:09,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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 21:43:09,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:09,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 478 [2023-08-03 21:43:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:09,408 INFO L124 PetriNetUnfolderBase]: 48/114 cut-off events. [2023-08-03 21:43:09,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:43:09,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 114 events. 48/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 276 event pairs, 33 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 210. Up to 100 conditions per place. [2023-08-03 21:43:09,409 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 21:43:09,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-08-03 21:43:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:43:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:43:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-03 21:43:09,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560669456066946 [2023-08-03 21:43:09,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-03 21:43:09,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-03 21:43:09,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:09,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-03 21:43:09,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 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 21:43:09,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 21:43:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 478.0) internal successors, (1912), 4 states have internal predecessors, (1912), 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 21:43:09,420 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 654 transitions. [2023-08-03 21:43:09,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-08-03 21:43:09,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:43:09,421 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-08-03 21:43:09,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-03 21:43:09,422 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-03 21:43:09,422 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-08-03 21:43:09,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 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 21:43:09,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:09,423 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:43:09,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:43:09,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:09,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 653315410, now seen corresponding path program 1 times [2023-08-03 21:43:09,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:09,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13121342] [2023-08-03 21:43:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:09,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:09,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:43:09,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1410932895] [2023-08-03 21:43:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:09,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:09,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:09,461 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 21:43:09,493 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 21:43:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:43:09,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:43:09,659 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:09,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13121342] [2023-08-03 21:43:09,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:43:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410932895] [2023-08-03 21:43:09,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410932895] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:09,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:43:09,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-03 21:43:09,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509590593] [2023-08-03 21:43:09,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:09,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:43:09,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:43:09,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:43:09,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-03 21:43:09,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 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 21:43:09,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:09,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-03 21:43:09,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:10,146 INFO L124 PetriNetUnfolderBase]: 48/120 cut-off events. [2023-08-03 21:43:10,147 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:43:10,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 120 events. 48/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 6/101 useless extension candidates. Maximal degree in co-relation 217. Up to 100 conditions per place. [2023-08-03 21:43:10,148 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-03 21:43:10,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-08-03 21:43:10,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:43:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:43:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1283 transitions. [2023-08-03 21:43:10,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44735006973500696 [2023-08-03 21:43:10,152 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1283 transitions. [2023-08-03 21:43:10,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1283 transitions. [2023-08-03 21:43:10,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:10,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1283 transitions. [2023-08-03 21:43:10,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 213.83333333333334) internal successors, (1283), 6 states have internal predecessors, (1283), 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 21:43:10,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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 21:43:10,162 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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 21:43:10,163 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 1283 transitions. [2023-08-03 21:43:10,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-08-03 21:43:10,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:43:10,165 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-08-03 21:43:10,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-03 21:43:10,165 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-03 21:43:10,165 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-08-03 21:43:10,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 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 21:43:10,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:10,167 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:43:10,177 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 21:43:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:10,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:10,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 389157432, now seen corresponding path program 2 times [2023-08-03 21:43:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173506927] [2023-08-03 21:43:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:10,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:10,444 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:43:10,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360636290] [2023-08-03 21:43:10,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:43:10,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:10,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:10,447 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 21:43:10,471 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 21:43:10,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:43:10,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:43:10,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 21:43:10,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:10,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 21:43:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173506927] [2023-08-03 21:43:10,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:43:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360636290] [2023-08-03 21:43:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360636290] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:10,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:43:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-03 21:43:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712351734] [2023-08-03 21:43:10,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 21:43:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:10,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 21:43:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-03 21:43:10,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-03 21:43:10,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 210.41666666666666) internal successors, (2525), 12 states have internal predecessors, (2525), 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 21:43:10,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:10,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-03 21:43:10,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:11,544 INFO L124 PetriNetUnfolderBase]: 48/132 cut-off events. [2023-08-03 21:43:11,544 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-03 21:43:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 132 events. 48/132 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 33 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 213. Up to 100 conditions per place. [2023-08-03 21:43:11,545 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-08-03 21:43:11,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-08-03 21:43:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 21:43:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 21:43:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2546 transitions. [2023-08-03 21:43:11,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44386331938633194 [2023-08-03 21:43:11,560 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2546 transitions. [2023-08-03 21:43:11,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2546 transitions. [2023-08-03 21:43:11,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:11,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2546 transitions. [2023-08-03 21:43:11,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.16666666666666) internal successors, (2546), 12 states have internal predecessors, (2546), 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 21:43:11,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 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 21:43:11,578 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 478.0) internal successors, (6214), 13 states have internal predecessors, (6214), 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 21:43:11,578 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 2546 transitions. [2023-08-03 21:43:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-08-03 21:43:11,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 21:43:11,584 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-08-03 21:43:11,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-03 21:43:11,586 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-03 21:43:11,586 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-08-03 21:43:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.41666666666666) internal successors, (2525), 12 states have internal predecessors, (2525), 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 21:43:11,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:11,587 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:43:11,598 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 21:43:11,795 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,SelfDestructingSolverStorable3 [2023-08-03 21:43:11,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:11,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2092588024, now seen corresponding path program 3 times [2023-08-03 21:43:11,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:11,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484157138] [2023-08-03 21:43:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:11,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:43:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113381054] [2023-08-03 21:43:11,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 21:43:11,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:11,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:11,944 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 21:43:11,955 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 21:43:12,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 21:43:12,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:43:12,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:43:12,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:12,383 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 21:43:12,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 21:43:12,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484157138] [2023-08-03 21:43:12,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:43:12,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113381054] [2023-08-03 21:43:12,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113381054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:12,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:43:12,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-03 21:43:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681288642] [2023-08-03 21:43:12,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:12,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:43:12,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:12,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:43:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:43:12,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-03 21:43:12,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 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) [2023-08-03 21:43:12,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:12,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-03 21:43:12,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:12,856 INFO L124 PetriNetUnfolderBase]: 50/159 cut-off events. [2023-08-03 21:43:12,856 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-03 21:43:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 159 events. 50/159 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 3/137 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-08-03 21:43:12,857 INFO L140 encePairwiseOnDemand]: 474/478 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-03 21:43:12,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-08-03 21:43:12,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:43:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:43:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-08-03 21:43:12,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449442119944212 [2023-08-03 21:43:12,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-08-03 21:43:12,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-08-03 21:43:12,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:12,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-08-03 21:43:12,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 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 21:43:12,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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 21:43:12,871 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 478.0) internal successors, (3346), 7 states have internal predecessors, (3346), 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 21:43:12,871 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 1289 transitions. [2023-08-03 21:43:12,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-08-03 21:43:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-03 21:43:12,876 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-08-03 21:43:12,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-03 21:43:12,877 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-08-03 21:43:12,877 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-08-03 21:43:12,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-08-03 21:43:12,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:12,878 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:43:12,886 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 21:43:13,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:13,087 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:13,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:13,087 INFO L85 PathProgramCache]: Analyzing trace with hash 336379330, now seen corresponding path program 4 times [2023-08-03 21:43:13,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:13,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073071370] [2023-08-03 21:43:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:13,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:13,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:43:13,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [467555337] [2023-08-03 21:43:13,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 21:43:13,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:13,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:13,533 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 21:43:13,558 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 21:43:15,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 21:43:15,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:43:15,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 9497 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 21:43:15,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:43:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 21:43:16,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:43:16,248 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 21:43:16,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:43:16,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073071370] [2023-08-03 21:43:16,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:43:16,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467555337] [2023-08-03 21:43:16,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467555337] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:43:16,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:43:16,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-03 21:43:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806572011] [2023-08-03 21:43:16,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:43:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 21:43:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:43:16,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 21:43:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-03 21:43:16,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 478 [2023-08-03 21:43:16,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 210.33333333333334) internal successors, (5048), 24 states have internal predecessors, (5048), 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 21:43:16,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:43:16,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 478 [2023-08-03 21:43:16,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:43:17,605 INFO L124 PetriNetUnfolderBase]: 50/207 cut-off events. [2023-08-03 21:43:17,606 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-03 21:43:17,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 207 events. 50/207 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 275 event pairs, 33 based on Foata normal form. 48/230 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-08-03 21:43:17,607 INFO L140 encePairwiseOnDemand]: 475/478 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-08-03 21:43:17,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-08-03 21:43:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 21:43:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 21:43:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5072 transitions. [2023-08-03 21:43:17,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421199442119944 [2023-08-03 21:43:17,619 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5072 transitions. [2023-08-03 21:43:17,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5072 transitions. [2023-08-03 21:43:17,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:43:17,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5072 transitions. [2023-08-03 21:43:17,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 211.33333333333334) internal successors, (5072), 24 states have internal predecessors, (5072), 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 21:43:17,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 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 21:43:17,647 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 478.0) internal successors, (11950), 25 states have internal predecessors, (11950), 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 21:43:17,648 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 5072 transitions. [2023-08-03 21:43:17,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-08-03 21:43:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 21:43:17,652 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-08-03 21:43:17,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=478, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-08-03 21:43:17,653 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-08-03 21:43:17,653 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-08-03 21:43:17,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 210.33333333333334) internal successors, (5048), 24 states have internal predecessors, (5048), 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 21:43:17,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:43:17,655 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:43:17,687 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 21:43:17,881 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 [2023-08-03 21:43:17,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:43:17,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:43:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1732545986, now seen corresponding path program 5 times [2023-08-03 21:43:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:43:17,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932477226] [2023-08-03 21:43:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:43:17,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:43:18,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:43:18,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172401439] [2023-08-03 21:43:18,689 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 21:43:18,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:43:18,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:43:18,694 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 21:43:18,701 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 21:57:10,933 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 21:57:10,934 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 21:57:11,991 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 21:57:12,134 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 21:57:12,170 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 21:57:12,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-03 21:57:12,172 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:57:12,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:57:12,172 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-03 21:57:12,173 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-03 21:57:12,175 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (1/2) [2023-08-03 21:57:12,176 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 21:57:12,176 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:57:12,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:57:12 BasicIcfg [2023-08-03 21:57:12,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:57:12,179 INFO L158 Benchmark]: Toolchain (without parser) took 875739.52ms. Allocated memory was 352.3MB in the beginning and 599.8MB in the end (delta: 247.5MB). Free memory was 301.6MB in the beginning and 420.0MB in the end (delta: -118.5MB). Peak memory consumption was 129.4MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,179 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 307.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:57:12,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.65ms. Allocated memory is still 352.3MB. Free memory was 301.6MB in the beginning and 270.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.88ms. Allocated memory is still 352.3MB. Free memory was 270.1MB in the beginning and 266.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,180 INFO L158 Benchmark]: Boogie Preprocessor took 35.42ms. Allocated memory is still 352.3MB. Free memory was 266.9MB in the beginning and 264.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,181 INFO L158 Benchmark]: RCFGBuilder took 539.80ms. Allocated memory was 352.3MB in the beginning and 499.1MB in the end (delta: 146.8MB). Free memory was 264.5MB in the beginning and 453.0MB in the end (delta: -188.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,181 INFO L158 Benchmark]: TraceAbstraction took 874463.37ms. Allocated memory was 499.1MB in the beginning and 599.8MB in the end (delta: 100.7MB). Free memory was 451.9MB in the beginning and 420.0MB in the end (delta: 31.9MB). Peak memory consumption was 132.6MB. Max. memory is 16.0GB. [2023-08-03 21:57:12,183 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 352.3MB. Free memory is still 307.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 646.65ms. Allocated memory is still 352.3MB. Free memory was 301.6MB in the beginning and 270.1MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.88ms. Allocated memory is still 352.3MB. Free memory was 270.1MB in the beginning and 266.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.42ms. Allocated memory is still 352.3MB. Free memory was 266.9MB in the beginning and 264.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 539.80ms. Allocated memory was 352.3MB in the beginning and 499.1MB in the end (delta: 146.8MB). Free memory was 264.5MB in the beginning and 453.0MB in the end (delta: -188.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.0GB. * TraceAbstraction took 874463.37ms. Allocated memory was 499.1MB in the beginning and 599.8MB in the end (delta: 100.7MB). Free memory was 451.9MB in the beginning and 420.0MB in the end (delta: 31.9MB). Peak memory consumption was 132.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 1084]: Unsoundness Warning unspecified type, defaulting to int C: long [1084] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.5s, 209 PlacesBefore, 25 PlacesAfterwards, 232 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 7 FixpointIterations, 115 TrivialSequentialCompositions, 77 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 19 ConcurrentYvCompositions, 12 ChoiceCompositions, 241 TotalNumberOfCompositions, 3403 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3006, independent: 2935, independent conditional: 0, independent unconditional: 2935, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1965, independent: 1944, independent conditional: 0, independent unconditional: 1944, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3006, independent: 991, independent conditional: 0, independent unconditional: 991, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 1965, unknown conditional: 0, unknown unconditional: 1965] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 282 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 874.3s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 30.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 652 IncrementalHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 4 mSDtfsCounter, 652 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, 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: 0.7s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 3 NumberOfNonLiveVariables, 11081 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 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