/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/queue_ok_longest.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:46:38,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:46:38,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 07:46:38,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:46:38,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:46:38,753 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:46:38,753 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:46:38,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:46:38,755 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:46:38,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:46:38,758 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:46:38,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:46:38,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:46:38,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:46:38,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:46:38,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:46:38,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:46:38,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:46:38,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:46:38,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:46:38,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:46:38,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:46:38,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:46:38,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:46:38,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:46:38,763 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:46:38,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:46:38,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:46:38,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:46:38,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:46:38,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:46:38,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:46:38,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:46:38,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:46:38,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:46:38,766 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:46:39,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:46:39,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:46:39,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:46:39,077 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:46:39,078 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:46:39,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-08-25 07:46:40,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:46:40,532 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:46:40,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longest.i [2023-08-25 07:46:40,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/256d25e59/b4a0a8ca0a8745f190967e4edff7ddc6/FLAG572977e0a [2023-08-25 07:46:40,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/256d25e59/b4a0a8ca0a8745f190967e4edff7ddc6 [2023-08-25 07:46:40,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:46:40,574 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:46:40,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:46:40,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:46:40,582 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:46:40,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:46:40" (1/1) ... [2023-08-25 07:46:40,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e48e483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:40, skipping insertion in model container [2023-08-25 07:46:40,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:46:40" (1/1) ... [2023-08-25 07:46:40,626 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:46:41,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:46:41,047 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:46:41,059 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:46:41,067 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 07:46:41,074 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-25 07:46:41,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:46:41,147 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:46:41,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41 WrapperNode [2023-08-25 07:46:41,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:46:41,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:46:41,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:46:41,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:46:41,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,212 INFO L138 Inliner]: procedures = 274, calls = 59, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 394 [2023-08-25 07:46:41,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:46:41,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:46:41,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:46:41,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:46:41,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,280 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,284 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,293 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:46:41,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:46:41,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:46:41,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:46:41,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (1/1) ... [2023-08-25 07:46:41,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:46:41,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:46:41,329 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) [2023-08-25 07:46:41,340 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 [2023-08-25 07:46:41,363 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 07:46:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 07:46:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 07:46:41,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 07:46:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:46:41,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:46:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:46:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:46:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 07:46:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:46:41,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:46:41,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:46:41,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:46:41,367 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:46:41,567 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:46:41,568 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:46:42,029 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:46:42,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:46:42,037 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 07:46:42,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:46:42 BoogieIcfgContainer [2023-08-25 07:46:42,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:46:42,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:46:42,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:46:42,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:46:42,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:46:40" (1/3) ... [2023-08-25 07:46:42,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cfe0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:46:42, skipping insertion in model container [2023-08-25 07:46:42,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:41" (2/3) ... [2023-08-25 07:46:42,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29cfe0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:46:42, skipping insertion in model container [2023-08-25 07:46:42,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:46:42" (3/3) ... [2023-08-25 07:46:42,046 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longest.i [2023-08-25 07:46:42,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:46:42,060 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-25 07:46:42,060 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:46:42,204 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 07:46:42,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 444 transitions, 904 flow [2023-08-25 07:46:42,456 INFO L124 PetriNetUnfolderBase]: 15/442 cut-off events. [2023-08-25 07:46:42,456 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 07:46:42,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 442 events. 15/442 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 802 event pairs, 0 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-25 07:46:42,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 444 transitions, 904 flow [2023-08-25 07:46:42,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 433 transitions, 875 flow [2023-08-25 07:46:42,485 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:46:42,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-25 07:46:42,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 433 transitions, 875 flow [2023-08-25 07:46:42,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 433 transitions, 875 flow [2023-08-25 07:46:42,588 INFO L124 PetriNetUnfolderBase]: 15/433 cut-off events. [2023-08-25 07:46:42,588 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 07:46:42,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 433 events. 15/433 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 730 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 315. Up to 3 conditions per place. [2023-08-25 07:46:42,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 52968 [2023-08-25 07:46:59,727 WARN L234 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 129 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:13,483 WARN L234 SmtUtils]: Spent 10.79s on a formula simplification. DAG size of input: 139 DAG size of output: 134 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:47:47,243 WARN L234 SmtUtils]: Spent 28.38s on a formula simplification. DAG size of input: 235 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:48:03,334 WARN L234 SmtUtils]: Spent 16.09s on a formula simplification that was a NOOP. DAG size: 213 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:48:34,608 WARN L234 SmtUtils]: Spent 31.27s on a formula simplification. DAG size of input: 242 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:48:44,837 WARN L234 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 219 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 07:48:44,857 INFO L134 LiptonReduction]: Checked pairs total: 425992 [2023-08-25 07:48:44,857 INFO L136 LiptonReduction]: Total number of compositions: 308 [2023-08-25 07:48:44,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:48:44,872 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=false, 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;@a91a81b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:48:44,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2023-08-25 07:48:44,873 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:48:44,873 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:48:44,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:48:44,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:44,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:48:44,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:44,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:44,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1578, now seen corresponding path program 1 times [2023-08-25 07:48:44,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:44,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437893230] [2023-08-25 07:48:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:44,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:44,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:48:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:44,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437893230] [2023-08-25 07:48:44,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437893230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:44,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:44,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:48:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356177606] [2023-08-25 07:48:44,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:44,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:48:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:48:45,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:48:45,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 431 out of 752 [2023-08-25 07:48:45,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 206 transitions, 421 flow. Second operand has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 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) [2023-08-25 07:48:45,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:45,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 431 of 752 [2023-08-25 07:48:45,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:48:45,926 INFO L124 PetriNetUnfolderBase]: 2398/7544 cut-off events. [2023-08-25 07:48:45,927 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-25 07:48:45,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11480 conditions, 7544 events. 2398/7544 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 63457 event pairs, 2022 based on Foata normal form. 52/6993 useless extension candidates. Maximal degree in co-relation 11034. Up to 3854 conditions per place. [2023-08-25 07:48:45,980 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 64 selfloop transitions, 0 changer transitions 0/197 dead transitions. [2023-08-25 07:48:45,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 197 transitions, 531 flow [2023-08-25 07:48:45,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:48:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:48:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 935 transitions. [2023-08-25 07:48:46,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216755319148937 [2023-08-25 07:48:46,001 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 935 transitions. [2023-08-25 07:48:46,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 935 transitions. [2023-08-25 07:48:46,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:48:46,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 935 transitions. [2023-08-25 07:48:46,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 467.5) internal successors, (935), 2 states have internal predecessors, (935), 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) [2023-08-25 07:48:46,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 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) [2023-08-25 07:48:46,021 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 752.0) internal successors, (2256), 3 states have internal predecessors, (2256), 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) [2023-08-25 07:48:46,023 INFO L175 Difference]: Start difference. First operand has 205 places, 206 transitions, 421 flow. Second operand 2 states and 935 transitions. [2023-08-25 07:48:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 197 transitions, 531 flow [2023-08-25 07:48:46,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 197 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 07:48:46,031 INFO L231 Difference]: Finished difference. Result has 195 places, 197 transitions, 398 flow [2023-08-25 07:48:46,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=398, PETRI_PLACES=195, PETRI_TRANSITIONS=197} [2023-08-25 07:48:46,035 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -10 predicate places. [2023-08-25 07:48:46,035 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 197 transitions, 398 flow [2023-08-25 07:48:46,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 431.5) internal successors, (863), 2 states have internal predecessors, (863), 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) [2023-08-25 07:48:46,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:46,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 07:48:46,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:48:46,037 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:46,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1506183822, now seen corresponding path program 1 times [2023-08-25 07:48:46,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:46,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333652980] [2023-08-25 07:48:46,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:46,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:48:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333652980] [2023-08-25 07:48:46,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333652980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:46,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:46,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:48:46,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709118520] [2023-08-25 07:48:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:46,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:48:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:46,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:48:46,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:48:46,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-25 07:48:46,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 197 transitions, 398 flow. Second operand has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 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) [2023-08-25 07:48:46,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:46,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-25 07:48:46,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:48:47,355 INFO L124 PetriNetUnfolderBase]: 3306/9643 cut-off events. [2023-08-25 07:48:47,355 INFO L125 PetriNetUnfolderBase]: For 24/76 co-relation queries the response was YES. [2023-08-25 07:48:47,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15090 conditions, 9643 events. 3306/9643 cut-off events. For 24/76 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 83553 event pairs, 728 based on Foata normal form. 2/8634 useless extension candidates. Maximal degree in co-relation 15087. Up to 3776 conditions per place. [2023-08-25 07:48:47,413 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 127 selfloop transitions, 4 changer transitions 0/258 dead transitions. [2023-08-25 07:48:47,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 258 transitions, 785 flow [2023-08-25 07:48:47,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:48:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:48:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1389 transitions. [2023-08-25 07:48:47,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6156914893617021 [2023-08-25 07:48:47,417 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1389 transitions. [2023-08-25 07:48:47,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1389 transitions. [2023-08-25 07:48:47,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:48:47,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1389 transitions. [2023-08-25 07:48:47,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 463.0) internal successors, (1389), 3 states have internal predecessors, (1389), 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) [2023-08-25 07:48:47,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:47,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:47,427 INFO L175 Difference]: Start difference. First operand has 195 places, 197 transitions, 398 flow. Second operand 3 states and 1389 transitions. [2023-08-25 07:48:47,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 258 transitions, 785 flow [2023-08-25 07:48:47,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 258 transitions, 785 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:48:47,432 INFO L231 Difference]: Finished difference. Result has 199 places, 200 transitions, 428 flow [2023-08-25 07:48:47,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=199, PETRI_TRANSITIONS=200} [2023-08-25 07:48:47,433 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -6 predicate places. [2023-08-25 07:48:47,433 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 200 transitions, 428 flow [2023-08-25 07:48:47,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.6666666666667) internal successors, (1262), 3 states have internal predecessors, (1262), 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) [2023-08-25 07:48:47,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:47,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:48:47,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:48:47,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:47,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:47,435 INFO L85 PathProgramCache]: Analyzing trace with hash 60779051, now seen corresponding path program 1 times [2023-08-25 07:48:47,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:47,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183577204] [2023-08-25 07:48:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:48:47,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:47,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183577204] [2023-08-25 07:48:47,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183577204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:47,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:47,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:48:47,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024612586] [2023-08-25 07:48:47,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:47,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:48:47,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:48:47,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:48:47,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 752 [2023-08-25 07:48:47,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 200 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-08-25 07:48:47,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:47,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 752 [2023-08-25 07:48:47,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:48:48,689 INFO L124 PetriNetUnfolderBase]: 3504/10789 cut-off events. [2023-08-25 07:48:48,690 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2023-08-25 07:48:48,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 10789 events. 3504/10789 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 97874 event pairs, 889 based on Foata normal form. 0/9778 useless extension candidates. Maximal degree in co-relation 16917. Up to 3715 conditions per place. [2023-08-25 07:48:48,741 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 128 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2023-08-25 07:48:48,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 259 transitions, 815 flow [2023-08-25 07:48:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:48:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:48:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1388 transitions. [2023-08-25 07:48:48,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6152482269503546 [2023-08-25 07:48:48,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1388 transitions. [2023-08-25 07:48:48,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1388 transitions. [2023-08-25 07:48:48,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:48:48,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1388 transitions. [2023-08-25 07:48:48,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 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) [2023-08-25 07:48:48,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:48,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:48,754 INFO L175 Difference]: Start difference. First operand has 199 places, 200 transitions, 428 flow. Second operand 3 states and 1388 transitions. [2023-08-25 07:48:48,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 259 transitions, 815 flow [2023-08-25 07:48:48,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 259 transitions, 805 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:48:48,760 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 450 flow [2023-08-25 07:48:48,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=450, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2023-08-25 07:48:48,761 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -4 predicate places. [2023-08-25 07:48:48,761 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 450 flow [2023-08-25 07:48:48,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 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) [2023-08-25 07:48:48,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:48,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:48:48,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:48:48,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:48,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1447325851, now seen corresponding path program 1 times [2023-08-25 07:48:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129801566] [2023-08-25 07:48:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:48,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:48:48,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129801566] [2023-08-25 07:48:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129801566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:48,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:48,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:48:48,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989248163] [2023-08-25 07:48:48,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:48,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:48:48,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:48,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:48:48,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:48:48,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-25 07:48:48,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 450 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 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) [2023-08-25 07:48:48,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:48,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-25 07:48:48,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:48:50,393 INFO L124 PetriNetUnfolderBase]: 5492/16081 cut-off events. [2023-08-25 07:48:50,394 INFO L125 PetriNetUnfolderBase]: For 841/841 co-relation queries the response was YES. [2023-08-25 07:48:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25960 conditions, 16081 events. 5492/16081 cut-off events. For 841/841 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 149195 event pairs, 2886 based on Foata normal form. 0/14688 useless extension candidates. Maximal degree in co-relation 25954. Up to 5372 conditions per place. [2023-08-25 07:48:50,483 INFO L140 encePairwiseOnDemand]: 749/752 looper letters, 125 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2023-08-25 07:48:50,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 259 transitions, 828 flow [2023-08-25 07:48:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:48:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:48:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-08-25 07:48:50,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112588652482269 [2023-08-25 07:48:50,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-08-25 07:48:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-08-25 07:48:50,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:48:50,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-08-25 07:48:50,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 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) [2023-08-25 07:48:50,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:50,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:48:50,496 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 450 flow. Second operand 3 states and 1379 transitions. [2023-08-25 07:48:50,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 259 transitions, 828 flow [2023-08-25 07:48:50,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 259 transitions, 816 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:48:50,504 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 454 flow [2023-08-25 07:48:50,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2023-08-25 07:48:50,506 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, -3 predicate places. [2023-08-25 07:48:50,506 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 454 flow [2023-08-25 07:48:50,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 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) [2023-08-25 07:48:50,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:48:50,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:48:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:48:50,508 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:48:50,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:48:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1979399093, now seen corresponding path program 1 times [2023-08-25 07:48:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:48:50,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535836734] [2023-08-25 07:48:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:48:50,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:48:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:48:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:48:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:48:50,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535836734] [2023-08-25 07:48:50,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535836734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:48:50,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:48:50,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:48:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207803129] [2023-08-25 07:48:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:48:50,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:48:50,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:48:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:48:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:48:50,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 752 [2023-08-25 07:48:50,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 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) [2023-08-25 07:48:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:48:50,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 752 [2023-08-25 07:48:50,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:49:27,099 INFO L124 PetriNetUnfolderBase]: 280881/439237 cut-off events. [2023-08-25 07:49:27,099 INFO L125 PetriNetUnfolderBase]: For 11243/11243 co-relation queries the response was YES. [2023-08-25 07:49:27,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885128 conditions, 439237 events. 280881/439237 cut-off events. For 11243/11243 co-relation queries the response was YES. Maximal size of possible extension queue 2530. Compared 3673261 event pairs, 108880 based on Foata normal form. 0/379779 useless extension candidates. Maximal degree in co-relation 885121. Up to 269755 conditions per place. [2023-08-25 07:49:29,360 INFO L140 encePairwiseOnDemand]: 714/752 looper letters, 698 selfloop transitions, 133 changer transitions 0/856 dead transitions. [2023-08-25 07:49:29,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 856 transitions, 3517 flow [2023-08-25 07:49:29,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:49:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:49:29,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2390 transitions. [2023-08-25 07:49:29,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296985815602837 [2023-08-25 07:49:29,370 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2390 transitions. [2023-08-25 07:49:29,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2390 transitions. [2023-08-25 07:49:29,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:49:29,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2390 transitions. [2023-08-25 07:49:29,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 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) [2023-08-25 07:49:29,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 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) [2023-08-25 07:49:29,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 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) [2023-08-25 07:49:29,389 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 454 flow. Second operand 6 states and 2390 transitions. [2023-08-25 07:49:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 856 transitions, 3517 flow [2023-08-25 07:49:29,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 856 transitions, 3507 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:49:29,441 INFO L231 Difference]: Finished difference. Result has 211 places, 336 transitions, 1322 flow [2023-08-25 07:49:29,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1322, PETRI_PLACES=211, PETRI_TRANSITIONS=336} [2023-08-25 07:49:29,444 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 6 predicate places. [2023-08-25 07:49:29,444 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 336 transitions, 1322 flow [2023-08-25 07:49:29,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.6666666666667) internal successors, (1588), 6 states have internal predecessors, (1588), 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) [2023-08-25 07:49:29,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:29,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:49:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:49:29,450 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:49:29,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:29,450 INFO L85 PathProgramCache]: Analyzing trace with hash -154006782, now seen corresponding path program 1 times [2023-08-25 07:49:29,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:29,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102211829] [2023-08-25 07:49:29,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:29,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:29,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:49:29,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:29,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102211829] [2023-08-25 07:49:29,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102211829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:29,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:29,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:49:29,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132056460] [2023-08-25 07:49:29,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:29,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:49:29,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:49:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:49:29,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 752 [2023-08-25 07:49:29,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 336 transitions, 1322 flow. Second operand has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 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) [2023-08-25 07:49:29,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:29,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 752 [2023-08-25 07:49:29,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:49:43,791 INFO L124 PetriNetUnfolderBase]: 58012/147969 cut-off events. [2023-08-25 07:49:43,791 INFO L125 PetriNetUnfolderBase]: For 35700/44439 co-relation queries the response was YES. [2023-08-25 07:49:44,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305519 conditions, 147969 events. 58012/147969 cut-off events. For 35700/44439 co-relation queries the response was YES. Maximal size of possible extension queue 1734. Compared 1819412 event pairs, 19276 based on Foata normal form. 4/138074 useless extension candidates. Maximal degree in co-relation 305508. Up to 44474 conditions per place. [2023-08-25 07:49:44,950 INFO L140 encePairwiseOnDemand]: 748/752 looper letters, 169 selfloop transitions, 3 changer transitions 0/414 dead transitions. [2023-08-25 07:49:44,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 414 transitions, 1923 flow [2023-08-25 07:49:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:49:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:49:44,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1382 transitions. [2023-08-25 07:49:44,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125886524822695 [2023-08-25 07:49:44,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1382 transitions. [2023-08-25 07:49:44,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1382 transitions. [2023-08-25 07:49:44,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:49:44,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1382 transitions. [2023-08-25 07:49:44,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.6666666666667) internal successors, (1382), 3 states have internal predecessors, (1382), 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) [2023-08-25 07:49:44,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:49:44,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 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) [2023-08-25 07:49:44,961 INFO L175 Difference]: Start difference. First operand has 211 places, 336 transitions, 1322 flow. Second operand 3 states and 1382 transitions. [2023-08-25 07:49:44,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 414 transitions, 1923 flow [2023-08-25 07:49:47,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 414 transitions, 1923 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:49:47,907 INFO L231 Difference]: Finished difference. Result has 214 places, 338 transitions, 1341 flow [2023-08-25 07:49:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1341, PETRI_PLACES=214, PETRI_TRANSITIONS=338} [2023-08-25 07:49:47,908 INFO L281 CegarLoopForPetriNet]: 205 programPoint places, 9 predicate places. [2023-08-25 07:49:47,909 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 338 transitions, 1341 flow [2023-08-25 07:49:47,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 421.0) internal successors, (1263), 3 states have internal predecessors, (1263), 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) [2023-08-25 07:49:47,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:49:47,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:49:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:49:47,910 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2023-08-25 07:49:47,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:49:47,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1387798132, now seen corresponding path program 1 times [2023-08-25 07:49:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:49:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382028342] [2023-08-25 07:49:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:49:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:49:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:49:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:49:48,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:49:48,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382028342] [2023-08-25 07:49:48,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382028342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:49:48,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:49:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:49:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126355723] [2023-08-25 07:49:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:49:48,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:49:48,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:49:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:49:48,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:49:48,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 752 [2023-08-25 07:49:48,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 338 transitions, 1341 flow. Second operand has 6 states, 6 states have (on average 260.6666666666667) internal successors, (1564), 6 states have internal predecessors, (1564), 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) [2023-08-25 07:49:48,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:49:48,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 752 [2023-08-25 07:49:48,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand