/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_91-arrayloop2_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:40:28,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:40:28,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:40:28,337 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:40:28,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:40:28,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:40:28,338 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:40:28,357 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:40:28,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:40:28,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:40:28,358 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:40:28,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:40:28,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:40:28,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:40:28,359 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:40:28,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:40:28,360 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:40:28,360 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:40:28,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:40:28,361 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:40:28,361 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:40:28,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:40:28,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:40:28,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:40:28,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:40:28,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:40:28,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:40:28,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:40:28,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:40:28,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:40:28,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:40:28,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:40:28,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:40:28,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:40:28,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:40:28,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:40:28,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:40:28,373 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:40:28,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:40:28,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:40:28,374 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:40:28,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:40:28,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:40:28,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:40:28,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:40:28,615 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:40:28,615 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:40:28,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 21:40:29,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:40:30,034 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:40:30,035 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 21:40:30,050 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6905606d5/ec543eac42bc4f81abf7fb48cabe4c3f/FLAG22c378e0b [2023-08-03 21:40:30,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6905606d5/ec543eac42bc4f81abf7fb48cabe4c3f [2023-08-03 21:40:30,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:40:30,066 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:40:30,067 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:40:30,067 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:40:30,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:40:30,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cdb535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30, skipping insertion in model container [2023-08-03 21:40:30,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,125 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:40:30,473 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_91-arrayloop2_racefree_bound2.i[47038,47051] [2023-08-03 21:40:30,483 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,484 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,484 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,485 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:40:30,531 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:40:30,556 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:40:30,563 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:40:30,574 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_91-arrayloop2_racefree_bound2.i[47038,47051] [2023-08-03 21:40:30,576 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,576 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,581 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,582 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 21:40:30,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:40:30,662 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:40:30,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30 WrapperNode [2023-08-03 21:40:30,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:40:30,666 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:40:30,666 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:40:30,666 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:40:30,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,711 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2023-08-03 21:40:30,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:40:30,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:40:30,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:40:30,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:40:30,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,726 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,741 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,753 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:40:30,761 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:40:30,761 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:40:30,761 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:40:30,762 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (1/1) ... [2023-08-03 21:40:30,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:40:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:40:30,805 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 21:40:30,818 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 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:40:30,841 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:40:30,842 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:40:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:40:30,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:40:30,844 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 21:40:31,010 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:40:31,013 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:40:31,284 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:40:31,291 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:40:31,291 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 21:40:31,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:40:31 BoogieIcfgContainer [2023-08-03 21:40:31,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:40:31,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:40:31,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:40:31,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:40:31,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:40:30" (1/3) ... [2023-08-03 21:40:31,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251504ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:40:31, skipping insertion in model container [2023-08-03 21:40:31,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:40:30" (2/3) ... [2023-08-03 21:40:31,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251504ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:40:31, skipping insertion in model container [2023-08-03 21:40:31,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:40:31" (3/3) ... [2023-08-03 21:40:31,303 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 21:40:31,311 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:40:31,319 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:40:31,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:40:31,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:40:31,429 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:40:31,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 184 transitions, 376 flow [2023-08-03 21:40:31,517 INFO L124 PetriNetUnfolderBase]: 26/200 cut-off events. [2023-08-03 21:40:31,518 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 21:40:31,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 200 events. 26/200 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 481 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-08-03 21:40:31,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 184 transitions, 376 flow [2023-08-03 21:40:31,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 179 transitions, 363 flow [2023-08-03 21:40:31,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:40:31,540 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 179 transitions, 363 flow [2023-08-03 21:40:31,542 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 179 transitions, 363 flow [2023-08-03 21:40:31,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 179 transitions, 363 flow [2023-08-03 21:40:31,592 INFO L124 PetriNetUnfolderBase]: 25/195 cut-off events. [2023-08-03 21:40:31,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:40:31,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 25/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 423 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-08-03 21:40:31,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-08-03 21:40:53,140 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 21:40:59,557 WARN L233 SmtUtils]: Spent 6.41s 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 21:40:59,830 INFO L134 LiptonReduction]: Checked pairs total: 3796 [2023-08-03 21:40:59,831 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-03 21:40:59,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:40:59,845 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;@4781a583, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:40:59,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:40:59,851 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:40:59,851 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-03 21:40:59,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:40:59,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:40:59,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 21:40:59,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:40:59,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:40:59,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1767713619, now seen corresponding path program 1 times [2023-08-03 21:40:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:40:59,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069645434] [2023-08-03 21:40:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:40:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:40:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:41:00,151 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 21:41:00,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069645434] [2023-08-03 21:41:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069645434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:41:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:41:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:41:00,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099301352] [2023-08-03 21:41:00,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:41:00,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:41:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:41:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:41:00,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-03 21:41:00,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 21:41:00,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:00,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-03 21:41:00,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:00,390 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2023-08-03 21:41:00,390 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:41:00,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 287 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-03 21:41:00,392 INFO L140 encePairwiseOnDemand]: 345/358 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 21:41:00,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-03 21:41:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:41:00,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:41:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-03 21:41:00,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2023-08-03 21:41:00,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-03 21:41:00,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-03 21:41:00,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:00,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-03 21:41:00,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 21:41:00,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 21:41:00,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 21:41:00,431 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 513 transitions. [2023-08-03 21:41:00,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-03 21:41:00,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:41:00,435 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-08-03 21:41:00,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-03 21:41:00,440 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-03 21:41:00,440 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-08-03 21:41:00,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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 21:41:00,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:00,441 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:41:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:41:00,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:00,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 549686375, now seen corresponding path program 1 times [2023-08-03 21:41:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287656514] [2023-08-03 21:41:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:41:00,550 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 21:41:00,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:00,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287656514] [2023-08-03 21:41:00,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287656514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:41:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:41:00,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:41:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077903134] [2023-08-03 21:41:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:41:00,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:41:00,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:00,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:41:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:41:00,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-03 21:41:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 21:41:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-03 21:41:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:00,745 INFO L124 PetriNetUnfolderBase]: 48/115 cut-off events. [2023-08-03 21:41:00,745 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:41:00,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 115 events. 48/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 212. Up to 100 conditions per place. [2023-08-03 21:41:00,746 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 21:41:00,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-08-03 21:41:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:41:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:41:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-03 21:41:00,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2023-08-03 21:41:00,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-03 21:41:00,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-03 21:41:00,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:00,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-03 21:41:00,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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 21:41:00,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 21:41:00,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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 21:41:00,753 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 501 transitions. [2023-08-03 21:41:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-08-03 21:41:00,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:41:00,755 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-08-03 21:41:00,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-03 21:41:00,755 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-03 21:41:00,756 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-08-03 21:41:00,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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 21:41:00,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:00,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:41:00,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 21:41:00,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:00,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:00,757 INFO L85 PathProgramCache]: Analyzing trace with hash 333836697, now seen corresponding path program 1 times [2023-08-03 21:41:00,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:00,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664938984] [2023-08-03 21:41:00,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:00,784 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:41:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432614414] [2023-08-03 21:41:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:00,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:41:00,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:41:00,789 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 21:41:00,820 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 21:41:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:41:00,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:41:00,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:41:01,046 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 21:41:01,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:41:01,064 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 21:41:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664938984] [2023-08-03 21:41:01,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:41:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432614414] [2023-08-03 21:41:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432614414] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:41:01,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:41:01,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-03 21:41:01,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055716153] [2023-08-03 21:41:01,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:41:01,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:41:01,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:01,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:41:01,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:41:01,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 21:41:01,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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 21:41:01,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:01,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 21:41:01,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:01,363 INFO L124 PetriNetUnfolderBase]: 48/121 cut-off events. [2023-08-03 21:41:01,364 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:41:01,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 121 events. 48/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 300 event pairs, 33 based on Foata normal form. 6/102 useless extension candidates. Maximal degree in co-relation 219. Up to 100 conditions per place. [2023-08-03 21:41:01,365 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-03 21:41:01,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-08-03 21:41:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:41:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:41:01,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 977 transitions. [2023-08-03 21:41:01,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548417132216015 [2023-08-03 21:41:01,368 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 977 transitions. [2023-08-03 21:41:01,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 977 transitions. [2023-08-03 21:41:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:01,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 977 transitions. [2023-08-03 21:41:01,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 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 21:41:01,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 21:41:01,375 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 21:41:01,375 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 977 transitions. [2023-08-03 21:41:01,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-08-03 21:41:01,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 21:41:01,377 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-08-03 21:41:01,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-03 21:41:01,378 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-03 21:41:01,378 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-08-03 21:41:01,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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 21:41:01,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:01,379 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:41:01,387 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 21:41:01,584 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 21:41:01,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:01,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:01,585 INFO L85 PathProgramCache]: Analyzing trace with hash 147605735, now seen corresponding path program 2 times [2023-08-03 21:41:01,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:01,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084425731] [2023-08-03 21:41:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:01,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:41:01,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235070668] [2023-08-03 21:41:01,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 21:41:01,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:41:01,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:41:01,650 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 21:41:01,676 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 21:41:01,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 21:41:01,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:41:01,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 21:41:01,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:41:02,000 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 21:41:02,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:41:02,050 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 21:41:02,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084425731] [2023-08-03 21:41:02,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:41:02,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235070668] [2023-08-03 21:41:02,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235070668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:41:02,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:41:02,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-03 21:41:02,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354094905] [2023-08-03 21:41:02,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:41:02,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 21:41:02,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:02,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 21:41:02,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-03 21:41:02,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 21:41:02,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 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 21:41:02,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:02,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 21:41:02,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:02,779 INFO L124 PetriNetUnfolderBase]: 48/133 cut-off events. [2023-08-03 21:41:02,779 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-03 21:41:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 133 events. 48/133 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 353 event pairs, 33 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 215. Up to 100 conditions per place. [2023-08-03 21:41:02,780 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-08-03 21:41:02,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-08-03 21:41:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 21:41:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 21:41:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1934 transitions. [2023-08-03 21:41:02,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45018621973929235 [2023-08-03 21:41:02,785 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1934 transitions. [2023-08-03 21:41:02,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1934 transitions. [2023-08-03 21:41:02,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:02,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1934 transitions. [2023-08-03 21:41:02,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 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 21:41:02,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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 21:41:02,797 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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 21:41:02,797 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 1934 transitions. [2023-08-03 21:41:02,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-08-03 21:41:02,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 21:41:02,799 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-08-03 21:41:02,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-03 21:41:02,800 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-03 21:41:02,801 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-08-03 21:41:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 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 21:41:02,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:02,802 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:41:02,808 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 21:41:03,008 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 21:41:03,009 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:03,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash -695915609, now seen corresponding path program 3 times [2023-08-03 21:41:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821059148] [2023-08-03 21:41:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:03,122 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:41:03,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1045660274] [2023-08-03 21:41:03,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 21:41:03,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:41:03,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:41:03,126 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 21:41:03,133 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 21:41:03,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 21:41:03,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:41:03,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:41:03,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:41:03,535 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 21:41:03,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:41:03,560 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 21:41:03,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821059148] [2023-08-03 21:41:03,560 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:41:03,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045660274] [2023-08-03 21:41:03,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045660274] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:41:03,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:41:03,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-03 21:41:03,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311775006] [2023-08-03 21:41:03,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:41:03,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 21:41:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 21:41:03,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:41:03,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 21:41:03,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 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 21:41:03,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:03,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 21:41:03,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:03,862 INFO L124 PetriNetUnfolderBase]: 50/160 cut-off events. [2023-08-03 21:41:03,863 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-03 21:41:03,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 160 events. 50/160 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-08-03 21:41:03,864 INFO L140 encePairwiseOnDemand]: 354/358 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-03 21:41:03,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-08-03 21:41:03,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 21:41:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 21:41:03,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 983 transitions. [2023-08-03 21:41:03,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45763500931098694 [2023-08-03 21:41:03,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 983 transitions. [2023-08-03 21:41:03,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 983 transitions. [2023-08-03 21:41:03,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:03,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 983 transitions. [2023-08-03 21:41:03,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 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 21:41:03,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 21:41:03,874 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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 21:41:03,874 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 983 transitions. [2023-08-03 21:41:03,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-08-03 21:41:03,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-03 21:41:03,879 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-08-03 21:41:03,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-03 21:41:03,880 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-08-03 21:41:03,880 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-08-03 21:41:03,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 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 21:41:03,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:03,881 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:41:03,888 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 21:41:04,084 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 21:41:04,085 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:04,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -666220907, now seen corresponding path program 4 times [2023-08-03 21:41:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464983933] [2023-08-03 21:41:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:04,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:04,511 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:41:04,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937790450] [2023-08-03 21:41:04,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 21:41:04,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:41:04,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:41:04,513 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 21:41:04,536 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 21:41:06,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 21:41:06,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 21:41:06,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 21:41:06,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:41:06,951 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 21:41:06,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:41:07,147 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 21:41:07,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:41:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464983933] [2023-08-03 21:41:07,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 21:41:07,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937790450] [2023-08-03 21:41:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937790450] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:41:07,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 21:41:07,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-03 21:41:07,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939320496] [2023-08-03 21:41:07,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 21:41:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 21:41:07,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:41:07,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 21:41:07,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-03 21:41:07,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 21:41:07,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 159.33333333333334) internal successors, (3824), 24 states have internal predecessors, (3824), 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 21:41:07,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:41:07,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 21:41:07,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:41:08,689 INFO L124 PetriNetUnfolderBase]: 50/208 cut-off events. [2023-08-03 21:41:08,690 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-03 21:41:08,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 208 events. 50/208 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 48/231 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-08-03 21:41:08,691 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-08-03 21:41:08,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-08-03 21:41:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 21:41:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 21:41:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3848 transitions. [2023-08-03 21:41:08,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478584729981378 [2023-08-03 21:41:08,700 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3848 transitions. [2023-08-03 21:41:08,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3848 transitions. [2023-08-03 21:41:08,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:41:08,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3848 transitions. [2023-08-03 21:41:08,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 160.33333333333334) internal successors, (3848), 24 states have internal predecessors, (3848), 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 21:41:08,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 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 21:41:08,720 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 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 21:41:08,720 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 3848 transitions. [2023-08-03 21:41:08,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-08-03 21:41:08,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 21:41:08,725 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-08-03 21:41:08,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-08-03 21:41:08,727 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-08-03 21:41:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-08-03 21:41:08,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 159.33333333333334) internal successors, (3824), 24 states have internal predecessors, (3824), 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 21:41:08,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:41:08,730 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 21:41:08,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 21:41:08,945 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 21:41:08,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:41:08,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:41:08,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1410511509, now seen corresponding path program 5 times [2023-08-03 21:41:08,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:41:08,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990430959] [2023-08-03 21:41:08,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:41:08,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:41:09,804 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 21:41:09,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618743462] [2023-08-03 21:41:09,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 21:41:09,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:41:09,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:41:09,806 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 21:41:09,830 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 21:55:08,694 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 21:55:08,694 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 21:55:09,757 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 21:55:09,905 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 21:55:09,938 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 21:55:09,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-03 21:55:09,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:55:09,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:55:09,940 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 21:55:09,941 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-03 21:55:09,942 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (1/2) [2023-08-03 21:55:09,943 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 21:55:09,943 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:55:09,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:55:09 BasicIcfg [2023-08-03 21:55:09,945 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:55:09,946 INFO L158 Benchmark]: Toolchain (without parser) took 879879.79ms. Allocated memory was 333.4MB in the beginning and 645.9MB in the end (delta: 312.5MB). Free memory was 282.7MB in the beginning and 465.8MB in the end (delta: -183.0MB). Peak memory consumption was 130.6MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,946 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 333.4MB. Free memory is still 283.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:55:09,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.86ms. Allocated memory is still 333.4MB. Free memory was 282.7MB in the beginning and 251.8MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.20ms. Allocated memory is still 333.4MB. Free memory was 251.8MB in the beginning and 249.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,947 INFO L158 Benchmark]: Boogie Preprocessor took 47.94ms. Allocated memory is still 333.4MB. Free memory was 249.0MB in the beginning and 246.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,947 INFO L158 Benchmark]: RCFGBuilder took 535.17ms. Allocated memory was 333.4MB in the beginning and 503.3MB in the end (delta: 169.9MB). Free memory was 246.9MB in the beginning and 456.6MB in the end (delta: -209.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,947 INFO L158 Benchmark]: TraceAbstraction took 878647.49ms. Allocated memory was 503.3MB in the beginning and 645.9MB in the end (delta: 142.6MB). Free memory was 455.6MB in the beginning and 465.8MB in the end (delta: -10.2MB). Peak memory consumption was 132.3MB. Max. memory is 16.0GB. [2023-08-03 21:55:09,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 333.4MB. Free memory is still 283.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 597.86ms. Allocated memory is still 333.4MB. Free memory was 282.7MB in the beginning and 251.8MB in the end (delta: 31.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.20ms. Allocated memory is still 333.4MB. Free memory was 251.8MB in the beginning and 249.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.94ms. Allocated memory is still 333.4MB. Free memory was 249.0MB in the beginning and 246.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 535.17ms. Allocated memory was 333.4MB in the beginning and 503.3MB in the end (delta: 169.9MB). Free memory was 246.9MB in the beginning and 456.6MB in the end (delta: -209.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.0GB. * TraceAbstraction took 878647.49ms. Allocated memory was 503.3MB in the beginning and 645.9MB in the end (delta: 142.6MB). Free memory was 455.6MB in the beginning and 465.8MB in the end (delta: -10.2MB). Peak memory consumption was 132.3MB. 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: 28.3s, 159 PlacesBefore, 25 PlacesAfterwards, 179 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 6 FixpointIterations, 60 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 19 ConcurrentYvCompositions, 9 ChoiceCompositions, 174 TotalNumberOfCompositions, 3796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3195, independent: 3129, independent conditional: 0, independent unconditional: 3129, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1955, independent: 1934, independent conditional: 0, independent unconditional: 1934, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3195, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1955, unknown conditional: 0, unknown unconditional: 1955] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1061]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 232 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 878.5s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 28.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 196 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 16 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.8s 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