/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_90-arrayloop2_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:39:57,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:39:57,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:39:57,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:39:57,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:39:57,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:39:57,583 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:39:57,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:39:57,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:39:57,623 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:39:57,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:39:57,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:39:57,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:39:57,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:39:57,628 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:39:57,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:39:57,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:39:57,628 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:39:57,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:39:57,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:39:57,629 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:39:57,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:39:57,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:39:57,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:39:57,631 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:39:57,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:39:57,631 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:39:57,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:39:57,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:39:57,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:39:57,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:39:57,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:39:57,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:39:57,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:39:57,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:39:57,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:39:57,634 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:39:57,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:39:57,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:39:57,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:39:57,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:39:57,907 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:39:57,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 21:39:59,018 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:39:59,269 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:39:59,270 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 21:39:59,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad6362ba/430f4224a050466296c327b97824dfcb/FLAGa3eeadcad [2023-08-03 21:39:59,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ad6362ba/430f4224a050466296c327b97824dfcb [2023-08-03 21:39:59,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:39:59,305 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:39:59,306 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:39:59,306 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:39:59,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:39:59,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:39:59,311 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61190637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59, skipping insertion in model container [2023-08-03 21:39:59,311 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:39:59,358 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:39:59,760 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_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-03 21:39:59,771 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,771 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,772 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,773 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:39:59,845 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:39:59,863 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:39:59,865 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:39:59,876 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_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-03 21:39:59,878 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,878 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,879 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,879 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:39:59,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:39:59,964 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:39:59,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59 WrapperNode [2023-08-03 21:39:59,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:39:59,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:39:59,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:39:59,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:39:59,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:39:59,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,022 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-08-03 21:40:00,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:40:00,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:40:00,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:40:00,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:40:00,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,047 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,047 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,083 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:40:00,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:40:00,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:40:00,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:40:00,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (1/1) ... [2023-08-03 21:40:00,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:40:00,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:00,122 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 21:40:00,133 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 21:40:00,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:40:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 21:40:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-03 21:40:00,161 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-03 21:40:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:40:00,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-03 21:40:00,162 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:40:00,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:40:00,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:40:00,165 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 21:40:00,351 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:40:00,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:40:00,739 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:40:00,746 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:40:00,747 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-03 21:40:00,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:40:00 BoogieIcfgContainer [2023-08-03 21:40:00,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:40:00,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:40:00,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:40:00,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:40:00,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:39:59" (1/3) ... [2023-08-03 21:40:00,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d17a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:40:00, skipping insertion in model container [2023-08-03 21:40:00,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:39:59" (2/3) ... [2023-08-03 21:40:00,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d17a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:40:00, skipping insertion in model container [2023-08-03 21:40:00,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:40:00" (3/3) ... [2023-08-03 21:40:00,769 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-03 21:40:00,776 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:40:00,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:40:00,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 21:40:00,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:40:00,898 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 21:40:00,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,064 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-03 21:40:01,065 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 21:40:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-03 21:40:01,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:40:01,109 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-03 21:40:01,192 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-03 21:40:01,192 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-03 21:40:01,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-03 21:40:01,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-08-03 21:40:16,033 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:40:22,731 WARN L233 SmtUtils]: Spent 6.69s 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 21:40:29,507 WARN L233 SmtUtils]: Spent 6.77s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:40:35,625 WARN L233 SmtUtils]: Spent 6.11s 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 21:40:35,632 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-08-03 21:40:35,632 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-08-03 21:40:35,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:40:35,652 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;@33abfbb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:40:35,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 21:40:35,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:40:35,661 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-03 21:40:35,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:40:35,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:35,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:40:35,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:35,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1961127902, now seen corresponding path program 1 times [2023-08-03 21:40:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:35,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710154660] [2023-08-03 21:40:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:40:35,962 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 21:40:35,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710154660] [2023-08-03 21:40:35,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710154660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:40:35,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:40:35,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:40:35,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184362760] [2023-08-03 21:40:35,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:40:35,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:40:35,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:40:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:40:36,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-03 21:40:36,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 21:40:36,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:36,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-03 21:40:36,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:37,042 INFO L124 PetriNetUnfolderBase]: 5341/8583 cut-off events. [2023-08-03 21:40:37,043 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-03 21:40:37,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-08-03 21:40:37,072 INFO L140 encePairwiseOnDemand]: 535/558 looper letters, 50 selfloop transitions, 2 changer transitions 12/76 dead transitions. [2023-08-03 21:40:37,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-08-03 21:40:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:40:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:40:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-03 21:40:37,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508363201911589 [2023-08-03 21:40:37,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-03 21:40:37,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-03 21:40:37,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:37,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-03 21:40:37,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 21:40:37,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 21:40:37,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 21:40:37,113 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 851 transitions. [2023-08-03 21:40:37,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-08-03 21:40:37,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:40:37,123 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 144 flow [2023-08-03 21:40:37,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-03 21:40:37,128 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 21:40:37,129 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 144 flow [2023-08-03 21:40:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 21:40:37,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:37,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:40:37,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:40:37,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:37,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1505272790, now seen corresponding path program 1 times [2023-08-03 21:40:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892355460] [2023-08-03 21:40:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:40:37,317 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 21:40:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892355460] [2023-08-03 21:40:37,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892355460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:40:37,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:40:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:40:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947693032] [2023-08-03 21:40:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:40:37,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:40:37,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:37,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:40:37,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:40:37,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-03 21:40:37,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 21:40:37,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:37,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-03 21:40:37,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:37,856 INFO L124 PetriNetUnfolderBase]: 2465/4061 cut-off events. [2023-08-03 21:40:37,856 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-03 21:40:37,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7785 conditions, 4061 events. 2465/4061 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21860 event pairs, 2032 based on Foata normal form. 2/3243 useless extension candidates. Maximal degree in co-relation 7766. Up to 3663 conditions per place. [2023-08-03 21:40:37,874 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 21:40:37,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 248 flow [2023-08-03 21:40:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:40:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:40:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-08-03 21:40:37,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.489247311827957 [2023-08-03 21:40:37,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-08-03 21:40:37,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-08-03 21:40:37,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:37,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-08-03 21:40:37,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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 21:40:37,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 21:40:37,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 21:40:37,891 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 144 flow. Second operand 3 states and 819 transitions. [2023-08-03 21:40:37,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 248 flow [2023-08-03 21:40:37,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:40:37,893 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 156 flow [2023-08-03 21:40:37,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-08-03 21:40:37,895 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2023-08-03 21:40:37,896 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 156 flow [2023-08-03 21:40:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 21:40:37,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:37,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:40:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:40:37,897 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:37,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:37,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1860116030, now seen corresponding path program 1 times [2023-08-03 21:40:37,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:37,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752367122] [2023-08-03 21:40:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:37,943 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:40:37,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329495555] [2023-08-03 21:40:37,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:37,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:40:37,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:37,951 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 21:40:37,955 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 21:40:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:40:38,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:40:38,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:40:38,140 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 21:40:38,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:40:38,156 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 21:40:38,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752367122] [2023-08-03 21:40:38,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:40:38,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329495555] [2023-08-03 21:40:38,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329495555] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:40:38,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:40:38,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-03 21:40:38,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369527637] [2023-08-03 21:40:38,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:40:38,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:40:38,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:40:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:40:38,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 21:40:38,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 21:40:38,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:38,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 21:40:38,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:38,850 INFO L124 PetriNetUnfolderBase]: 2465/4067 cut-off events. [2023-08-03 21:40:38,850 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-03 21:40:38,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 4067 events. 2465/4067 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21867 event pairs, 2032 based on Foata normal form. 6/3253 useless extension candidates. Maximal degree in co-relation 7773. Up to 3663 conditions per place. [2023-08-03 21:40:38,872 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-08-03 21:40:38,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 276 flow [2023-08-03 21:40:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:40:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:40:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1586 transitions. [2023-08-03 21:40:38,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47371565113500597 [2023-08-03 21:40:38,878 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1586 transitions. [2023-08-03 21:40:38,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1586 transitions. [2023-08-03 21:40:38,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:38,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1586 transitions. [2023-08-03 21:40:38,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.3333333333333) internal successors, (1586), 6 states have internal predecessors, (1586), 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 21:40:38,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 21:40:38,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 21:40:38,890 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 156 flow. Second operand 6 states and 1586 transitions. [2023-08-03 21:40:38,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 276 flow [2023-08-03 21:40:38,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:40:38,893 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 194 flow [2023-08-03 21:40:38,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-08-03 21:40:38,894 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2023-08-03 21:40:38,894 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 194 flow [2023-08-03 21:40:38,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 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 21:40:38,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:38,896 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:40:38,907 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 21:40:39,102 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 21:40:39,102 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:39,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash 281984726, now seen corresponding path program 2 times [2023-08-03 21:40:39,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:39,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114991114] [2023-08-03 21:40:39,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:39,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:39,168 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:40:39,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456145745] [2023-08-03 21:40:39,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:40:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:40:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:39,170 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 21:40:39,173 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 21:40:39,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:40:39,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:40:39,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 21:40:39,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:40:39,538 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 21:40:39,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:40:39,603 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 21:40:39,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114991114] [2023-08-03 21:40:39,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:40:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456145745] [2023-08-03 21:40:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456145745] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:40:39,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:40:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-03 21:40:39,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253743827] [2023-08-03 21:40:39,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:40:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 21:40:39,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 21:40:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-03 21:40:39,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 21:40:39,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 256.4166666666667) internal successors, (3077), 12 states have internal predecessors, (3077), 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 21:40:39,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:39,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 21:40:39,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:40,499 INFO L124 PetriNetUnfolderBase]: 2465/4079 cut-off events. [2023-08-03 21:40:40,499 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-03 21:40:40,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 4079 events. 2465/4079 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21943 event pairs, 2032 based on Foata normal form. 12/3271 useless extension candidates. Maximal degree in co-relation 7769. Up to 3663 conditions per place. [2023-08-03 21:40:40,527 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-03 21:40:40,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 350 flow [2023-08-03 21:40:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 21:40:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 21:40:40,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3125 transitions. [2023-08-03 21:40:40,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46669653524492233 [2023-08-03 21:40:40,534 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3125 transitions. [2023-08-03 21:40:40,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3125 transitions. [2023-08-03 21:40:40,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:40,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3125 transitions. [2023-08-03 21:40:40,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 260.4166666666667) internal successors, (3125), 12 states have internal predecessors, (3125), 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 21:40:40,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 21:40:40,554 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 21:40:40,554 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 194 flow. Second operand 12 states and 3125 transitions. [2023-08-03 21:40:40,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 350 flow [2023-08-03 21:40:40,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 21:40:40,560 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 276 flow [2023-08-03 21:40:40,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2023-08-03 21:40:40,563 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2023-08-03 21:40:40,563 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 276 flow [2023-08-03 21:40:40,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.4166666666667) internal successors, (3077), 12 states have internal predecessors, (3077), 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 21:40:40,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:40,565 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:40:40,577 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 21:40:40,772 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 21:40:40,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:40,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1737594710, now seen corresponding path program 3 times [2023-08-03 21:40:40,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:40,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602735844] [2023-08-03 21:40:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:40,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:40:40,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006508304] [2023-08-03 21:40:40,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 21:40:40,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:40:40,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:40,908 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 21:40:40,910 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 21:40:41,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 21:40:41,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:40:41,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:40:41,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:40:41,345 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 21:40:41,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:40:41,388 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 21:40:41,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602735844] [2023-08-03 21:40:41,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:40:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006508304] [2023-08-03 21:40:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006508304] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:40:41,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:40:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-03 21:40:41,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798269008] [2023-08-03 21:40:41,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:40:41,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:40:41,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:40:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:40:41,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 21:40:41,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 21:40:41,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:41,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 21:40:41,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:42,135 INFO L124 PetriNetUnfolderBase]: 2471/4134 cut-off events. [2023-08-03 21:40:42,135 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-08-03 21:40:42,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8101 conditions, 4134 events. 2471/4134 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22052 event pairs, 2032 based on Foata normal form. 3/3333 useless extension candidates. Maximal degree in co-relation 7794. Up to 3657 conditions per place. [2023-08-03 21:40:42,152 INFO L140 encePairwiseOnDemand]: 554/558 looper letters, 93 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-08-03 21:40:42,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 823 flow [2023-08-03 21:40:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:40:42,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:40:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1592 transitions. [2023-08-03 21:40:42,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755077658303465 [2023-08-03 21:40:42,161 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1592 transitions. [2023-08-03 21:40:42,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1592 transitions. [2023-08-03 21:40:42,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:42,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1592 transitions. [2023-08-03 21:40:42,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.3333333333333) internal successors, (1592), 6 states have internal predecessors, (1592), 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 21:40:42,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 21:40:42,171 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 21:40:42,171 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 276 flow. Second operand 6 states and 1592 transitions. [2023-08-03 21:40:42,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 823 flow [2023-08-03 21:40:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 629 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-03 21:40:42,175 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 311 flow [2023-08-03 21:40:42,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2023-08-03 21:40:42,176 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2023-08-03 21:40:42,176 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 311 flow [2023-08-03 21:40:42,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.1666666666667) internal successors, (1543), 6 states have internal predecessors, (1543), 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 21:40:42,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:42,177 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:40:42,183 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 21:40:42,382 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 21:40:42,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:42,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:42,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1081566990, now seen corresponding path program 4 times [2023-08-03 21:40:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295835435] [2023-08-03 21:40:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:42,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:42,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:40:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403103698] [2023-08-03 21:40:42,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 21:40:42,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:40:42,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:42,815 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 21:40:42,839 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 21:40:45,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 21:40:45,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:40:45,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 21:40:45,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:40:45,318 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 21:40:45,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:40:45,537 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 21:40:45,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:40:45,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295835435] [2023-08-03 21:40:45,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:40:45,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403103698] [2023-08-03 21:40:45,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403103698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:40:45,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:40:45,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-03 21:40:45,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814072256] [2023-08-03 21:40:45,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:40:45,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 21:40:45,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:40:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 21:40:45,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-03 21:40:45,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-03 21:40:45,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 311 flow. Second operand has 24 states, 24 states have (on average 256.3333333333333) internal successors, (6152), 24 states have internal predecessors, (6152), 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 21:40:45,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:40:45,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-03 21:40:45,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:40:46,954 INFO L124 PetriNetUnfolderBase]: 2471/4182 cut-off events. [2023-08-03 21:40:46,954 INFO L125 PetriNetUnfolderBase]: For 3505/3505 co-relation queries the response was YES. [2023-08-03 21:40:46,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 4182 events. 2471/4182 cut-off events. For 3505/3505 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22045 event pairs, 2032 based on Foata normal form. 48/3426 useless extension candidates. Maximal degree in co-relation 7799. Up to 3669 conditions per place. [2023-08-03 21:40:46,972 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 51 selfloop transitions, 24 changer transitions 0/87 dead transitions. [2023-08-03 21:40:46,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 87 transitions, 533 flow [2023-08-03 21:40:46,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 21:40:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 21:40:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6203 transitions. [2023-08-03 21:40:46,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631869772998805 [2023-08-03 21:40:46,987 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6203 transitions. [2023-08-03 21:40:46,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6203 transitions. [2023-08-03 21:40:46,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:40:46,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6203 transitions. [2023-08-03 21:40:47,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 258.4583333333333) internal successors, (6203), 24 states have internal predecessors, (6203), 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 21:40:47,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 21:40:47,024 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 21:40:47,024 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 311 flow. Second operand 24 states and 6203 transitions. [2023-08-03 21:40:47,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 87 transitions, 533 flow [2023-08-03 21:40:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 87 transitions, 525 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 21:40:47,028 INFO L231 Difference]: Finished difference. Result has 124 places, 87 transitions, 545 flow [2023-08-03 21:40:47,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=545, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2023-08-03 21:40:47,029 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2023-08-03 21:40:47,029 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 545 flow [2023-08-03 21:40:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 256.3333333333333) internal successors, (6152), 24 states have internal predecessors, (6152), 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 21:40:47,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:47,031 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:40:47,059 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 21:40:47,256 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 21:40:47,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:47,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:47,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1744029938, now seen corresponding path program 5 times [2023-08-03 21:40:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279933679] [2023-08-03 21:40:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:48,140 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:40:48,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890067663] [2023-08-03 21:40:48,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 21:40:48,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:40:48,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:48,142 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 21:40:48,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-03 21:54:32,870 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:54:32,870 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 21:54:33,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 21:54:34,081 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-03 21:54:34,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-03 21:54:34,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-03 21:54:34,121 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 21:54:34,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:54:34,121 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 21:54:34,122 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 21:54:34,123 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-03 21:54:34,124 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-08-03 21:54:34,126 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 21:54:34,126 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:54:34,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:54:34 BasicIcfg [2023-08-03 21:54:34,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:54:34,131 INFO L158 Benchmark]: Toolchain (without parser) took 874825.97ms. Allocated memory was 343.9MB in the beginning and 675.3MB in the end (delta: 331.4MB). Free memory was 288.6MB in the beginning and 390.8MB in the end (delta: -102.2MB). Peak memory consumption was 230.5MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,132 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 297.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:54:34,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 658.46ms. Allocated memory was 343.9MB in the beginning and 465.6MB in the end (delta: 121.6MB). Free memory was 288.6MB in the beginning and 431.8MB in the end (delta: -143.2MB). Peak memory consumption was 38.4MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,132 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.64ms. Allocated memory is still 465.6MB. Free memory was 431.1MB in the beginning and 428.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,133 INFO L158 Benchmark]: Boogie Preprocessor took 66.60ms. Allocated memory is still 465.6MB. Free memory was 428.1MB in the beginning and 425.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,136 INFO L158 Benchmark]: RCFGBuilder took 658.39ms. Allocated memory is still 465.6MB. Free memory was 425.5MB in the beginning and 397.5MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,136 INFO L158 Benchmark]: TraceAbstraction took 873379.73ms. Allocated memory was 465.6MB in the beginning and 675.3MB in the end (delta: 209.7MB). Free memory was 397.5MB in the beginning and 390.8MB in the end (delta: 6.7MB). Peak memory consumption was 215.1MB. Max. memory is 16.0GB. [2023-08-03 21:54:34,138 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory is still 297.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 658.46ms. Allocated memory was 343.9MB in the beginning and 465.6MB in the end (delta: 121.6MB). Free memory was 288.6MB in the beginning and 431.8MB in the end (delta: -143.2MB). Peak memory consumption was 38.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.64ms. Allocated memory is still 465.6MB. Free memory was 431.1MB in the beginning and 428.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 66.60ms. Allocated memory is still 465.6MB. Free memory was 428.1MB in the beginning and 425.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 658.39ms. Allocated memory is still 465.6MB. Free memory was 425.5MB in the beginning and 397.5MB in the end (delta: 28.0MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 873379.73ms. Allocated memory was 465.6MB in the beginning and 675.3MB in the end (delta: 209.7MB). Free memory was 397.5MB in the beginning and 390.8MB in the end (delta: 6.7MB). Peak memory consumption was 215.1MB. 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] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.5s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, 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. - 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 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 873.2s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 34.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1112 IncrementalHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 2 mSDtfsCounter, 1112 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=545occurred 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: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 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