/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 PROGRAM_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.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:51:41,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:51:41,919 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 21:51:41,923 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:51:41,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:51:41,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:51:41,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:51:41,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:51:41,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:51:41,945 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:51:41,945 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:51:41,946 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:51:41,946 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:51:41,946 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:51:41,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:51:41,947 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:51:41,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:51:41,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:51:41,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:51:41,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:51:41,949 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:51:41,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:51:41,949 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:51:41,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:51:41,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:51:41,950 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:51:41,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:51:41,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:51:41,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:51:41,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:51:41,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:51:41,953 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:51:41,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:51:41,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:51:41,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:51:41,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:51:42,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:51:42,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:51:42,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:51:42,307 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:51:42,307 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:51:42,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-08-25 21:51:43,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:51:43,866 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:51:43,866 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-08-25 21:51:43,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35967a898/0c653d5c61ee4edc8665006841941026/FLAG32296b4a2 [2023-08-25 21:51:43,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35967a898/0c653d5c61ee4edc8665006841941026 [2023-08-25 21:51:43,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:51:43,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:51:43,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:51:43,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:51:43,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:51:43,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:51:43" (1/1) ... [2023-08-25 21:51:43,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782bb68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:43, skipping insertion in model container [2023-08-25 21:51:43,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:51:43" (1/1) ... [2023-08-25 21:51:43,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:51:44,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:51:44,507 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:51:44,535 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 21:51:44,536 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [258] [2023-08-25 21:51:44,542 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [750] [2023-08-25 21:51:44,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:51:44,658 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:51:44,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44 WrapperNode [2023-08-25 21:51:44,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:51:44,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:51:44,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:51:44,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:51:44,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,757 INFO L138 Inliner]: procedures = 274, calls = 71, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 501 [2023-08-25 21:51:44,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:51:44,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:51:44,759 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:51:44,759 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:51:44,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,774 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,806 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,812 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:51:44,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:51:44,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:51:44,819 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:51:44,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (1/1) ... [2023-08-25 21:51:44,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:51:44,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:51:44,859 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 21:51:44,884 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 21:51:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-25 21:51:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-25 21:51:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-25 21:51:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 21:51:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:51:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:51:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:51:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:51:44,905 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 21:51:45,076 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:51:45,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:51:45,818 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:51:45,826 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:51:45,827 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:51:45,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:51:45 BoogieIcfgContainer [2023-08-25 21:51:45,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:51:45,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:51:45,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:51:45,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:51:45,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:51:43" (1/3) ... [2023-08-25 21:51:45,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e7c569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:51:45, skipping insertion in model container [2023-08-25 21:51:45,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:51:44" (2/3) ... [2023-08-25 21:51:45,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21e7c569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:51:45, skipping insertion in model container [2023-08-25 21:51:45,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:51:45" (3/3) ... [2023-08-25 21:51:45,840 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-08-25 21:51:45,855 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:51:45,855 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 47 error locations. [2023-08-25 21:51:45,855 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:51:45,997 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:51:46,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 562 transitions, 1140 flow [2023-08-25 21:51:46,250 INFO L124 PetriNetUnfolderBase]: 18/560 cut-off events. [2023-08-25 21:51:46,251 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:51:46,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 560 events. 18/560 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 845 event pairs, 0 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 425. Up to 2 conditions per place. [2023-08-25 21:51:46,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 551 places, 562 transitions, 1140 flow [2023-08-25 21:51:46,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 540 places, 551 transitions, 1111 flow [2023-08-25 21:51:46,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:51:46,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 540 places, 551 transitions, 1111 flow [2023-08-25 21:51:46,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 540 places, 551 transitions, 1111 flow [2023-08-25 21:51:46,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 540 places, 551 transitions, 1111 flow [2023-08-25 21:51:46,394 INFO L124 PetriNetUnfolderBase]: 18/551 cut-off events. [2023-08-25 21:51:46,394 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 21:51:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 551 events. 18/551 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 811 event pairs, 0 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 425. Up to 2 conditions per place. [2023-08-25 21:51:46,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 85880 [2023-08-25 21:52:10,541 WARN L234 SmtUtils]: Spent 7.94s on a formula simplification. DAG size of input: 136 DAG size of output: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:52:25,694 WARN L234 SmtUtils]: Spent 12.20s on a formula simplification. DAG size of input: 140 DAG size of output: 129 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:52:43,830 WARN L234 SmtUtils]: Spent 15.57s on a formula simplification that was a NOOP. DAG size: 237 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:52:58,345 WARN L234 SmtUtils]: Spent 14.51s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:53:10,683 WARN L234 SmtUtils]: Spent 12.34s on a formula simplification that was a NOOP. DAG size: 240 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:53:20,864 WARN L234 SmtUtils]: Spent 10.18s on a formula simplification that was a NOOP. DAG size: 233 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-25 21:53:20,887 INFO L134 LiptonReduction]: Checked pairs total: 645630 [2023-08-25 21:53:20,887 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-08-25 21:53:20,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:53:20,902 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;@5b620cf3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:53:20,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-08-25 21:53:20,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:53:20,903 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:53:20,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:53:20,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:53:20,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:53:20,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 21:53:20,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:53:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1985, now seen corresponding path program 1 times [2023-08-25 21:53:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:53:20,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624213042] [2023-08-25 21:53:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:53:20,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:53:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:53:21,012 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 21:53:21,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:53:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624213042] [2023-08-25 21:53:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624213042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:53:21,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:53:21,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:53:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75627667] [2023-08-25 21:53:21,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:53:21,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:53:21,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:53:21,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:53:21,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:53:21,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 546 out of 910 [2023-08-25 21:53:21,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 283 transitions, 575 flow. Second operand has 2 states, 2 states have (on average 546.5) internal successors, (1093), 2 states have internal predecessors, (1093), 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 21:53:21,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:53:21,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 546 of 910 [2023-08-25 21:53:21,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:53:22,874 INFO L124 PetriNetUnfolderBase]: 4674/13735 cut-off events. [2023-08-25 21:53:22,875 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-25 21:53:22,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21417 conditions, 13735 events. 4674/13735 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 120184 event pairs, 4086 based on Foata normal form. 186/12596 useless extension candidates. Maximal degree in co-relation 20964. Up to 7554 conditions per place. [2023-08-25 21:53:23,054 INFO L140 encePairwiseOnDemand]: 899/910 looper letters, 89 selfloop transitions, 0 changer transitions 0/269 dead transitions. [2023-08-25 21:53:23,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 269 transitions, 725 flow [2023-08-25 21:53:23,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:53:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:53:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1192 transitions. [2023-08-25 21:53:23,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654945054945055 [2023-08-25 21:53:23,070 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1192 transitions. [2023-08-25 21:53:23,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1192 transitions. [2023-08-25 21:53:23,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:53:23,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1192 transitions. [2023-08-25 21:53:23,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 596.0) internal successors, (1192), 2 states have internal predecessors, (1192), 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 21:53:23,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 910.0) internal successors, (2730), 3 states have internal predecessors, (2730), 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 21:53:23,088 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 910.0) internal successors, (2730), 3 states have internal predecessors, (2730), 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 21:53:23,090 INFO L175 Difference]: Start difference. First operand has 278 places, 283 transitions, 575 flow. Second operand 2 states and 1192 transitions. [2023-08-25 21:53:23,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 269 transitions, 725 flow [2023-08-25 21:53:23,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 269 transitions, 720 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 21:53:23,099 INFO L231 Difference]: Finished difference. Result has 266 places, 269 transitions, 542 flow [2023-08-25 21:53:23,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=910, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=266, PETRI_TRANSITIONS=269} [2023-08-25 21:53:23,104 INFO L281 CegarLoopForPetriNet]: 278 programPoint places, -12 predicate places. [2023-08-25 21:53:23,104 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 269 transitions, 542 flow [2023-08-25 21:53:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 546.5) internal successors, (1093), 2 states have internal predecessors, (1093), 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 21:53:23,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:53:23,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:53:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:53:23,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 21:53:23,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:53:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1047569244, now seen corresponding path program 1 times [2023-08-25 21:53:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:53:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230861395] [2023-08-25 21:53:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:53:23,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:53:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:53:23,326 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 21:53:23,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:53:23,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230861395] [2023-08-25 21:53:23,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230861395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:53:23,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:53:23,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:53:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036244105] [2023-08-25 21:53:23,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:53:23,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:53:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:53:23,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:53:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:53:23,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 534 out of 910 [2023-08-25 21:53:23,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 269 transitions, 542 flow. Second operand has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 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 21:53:23,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:53:23,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 534 of 910 [2023-08-25 21:53:23,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:53:26,003 INFO L124 PetriNetUnfolderBase]: 8279/22486 cut-off events. [2023-08-25 21:53:26,003 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-25 21:53:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35990 conditions, 22486 events. 8279/22486 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 198529 event pairs, 1953 based on Foata normal form. 0/20160 useless extension candidates. Maximal degree in co-relation 35987. Up to 7282 conditions per place. [2023-08-25 21:53:26,124 INFO L140 encePairwiseOnDemand]: 905/910 looper letters, 178 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2023-08-25 21:53:26,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 355 transitions, 1079 flow [2023-08-25 21:53:26,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:53:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:53:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1785 transitions. [2023-08-25 21:53:26,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2023-08-25 21:53:26,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1785 transitions. [2023-08-25 21:53:26,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1785 transitions. [2023-08-25 21:53:26,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:53:26,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1785 transitions. [2023-08-25 21:53:26,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 595.0) internal successors, (1785), 3 states have internal predecessors, (1785), 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 21:53:26,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 910.0) internal successors, (3640), 4 states have internal predecessors, (3640), 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 21:53:26,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 910.0) internal successors, (3640), 4 states have internal predecessors, (3640), 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 21:53:26,144 INFO L175 Difference]: Start difference. First operand has 266 places, 269 transitions, 542 flow. Second operand 3 states and 1785 transitions. [2023-08-25 21:53:26,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 355 transitions, 1079 flow [2023-08-25 21:53:26,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 355 transitions, 1079 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:53:26,156 INFO L231 Difference]: Finished difference. Result has 270 places, 273 transitions, 576 flow [2023-08-25 21:53:26,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=910, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=576, PETRI_PLACES=270, PETRI_TRANSITIONS=273} [2023-08-25 21:53:26,159 INFO L281 CegarLoopForPetriNet]: 278 programPoint places, -8 predicate places. [2023-08-25 21:53:26,159 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 273 transitions, 576 flow [2023-08-25 21:53:26,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 536.6666666666666) internal successors, (1610), 3 states have internal predecessors, (1610), 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 21:53:26,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:53:26,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:53:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:53:26,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 21:53:26,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:53:26,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1207618743, now seen corresponding path program 1 times [2023-08-25 21:53:26,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:53:26,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298314337] [2023-08-25 21:53:26,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:53:26,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:53:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:53:26,652 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 21:53:26,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:53:26,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298314337] [2023-08-25 21:53:26,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298314337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:53:26,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:53:26,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:53:26,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089655809] [2023-08-25 21:53:26,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:53:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:53:26,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:53:26,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:53:26,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:53:26,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 910 [2023-08-25 21:53:26,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 273 transitions, 576 flow. Second operand has 6 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 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 21:53:26,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:53:26,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 910 [2023-08-25 21:53:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:54:12,986 INFO L124 PetriNetUnfolderBase]: 329489/512794 cut-off events. [2023-08-25 21:54:12,986 INFO L125 PetriNetUnfolderBase]: For 4964/4964 co-relation queries the response was YES. [2023-08-25 21:54:13,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020876 conditions, 512794 events. 329489/512794 cut-off events. For 4964/4964 co-relation queries the response was YES. Maximal size of possible extension queue 1519. Compared 3896511 event pairs, 215177 based on Foata normal form. 0/434955 useless extension candidates. Maximal degree in co-relation 1020871. Up to 382624 conditions per place. [2023-08-25 21:54:15,610 INFO L140 encePairwiseOnDemand]: 854/910 looper letters, 559 selfloop transitions, 86 changer transitions 0/665 dead transitions. [2023-08-25 21:54:15,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 665 transitions, 2682 flow [2023-08-25 21:54:15,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:54:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:54:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2506 transitions. [2023-08-25 21:54:15,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45897435897435895 [2023-08-25 21:54:15,617 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2506 transitions. [2023-08-25 21:54:15,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2506 transitions. [2023-08-25 21:54:15,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:54:15,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2506 transitions. [2023-08-25 21:54:15,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 417.6666666666667) internal successors, (2506), 6 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) [2023-08-25 21:54:15,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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 21:54:15,635 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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 21:54:15,635 INFO L175 Difference]: Start difference. First operand has 270 places, 273 transitions, 576 flow. Second operand 6 states and 2506 transitions. [2023-08-25 21:54:15,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 665 transitions, 2682 flow [2023-08-25 21:54:15,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 665 transitions, 2666 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:54:15,666 INFO L231 Difference]: Finished difference. Result has 278 places, 355 transitions, 1180 flow [2023-08-25 21:54:15,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=910, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1180, PETRI_PLACES=278, PETRI_TRANSITIONS=355} [2023-08-25 21:54:15,669 INFO L281 CegarLoopForPetriNet]: 278 programPoint places, 0 predicate places. [2023-08-25 21:54:15,669 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 355 transitions, 1180 flow [2023-08-25 21:54:15,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.5) internal successors, (1869), 6 states have internal predecessors, (1869), 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 21:54:15,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:54:15,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:54:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:54:15,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 21:54:15,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:54:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1645681360, now seen corresponding path program 1 times [2023-08-25 21:54:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:54:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177339022] [2023-08-25 21:54:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:54:15,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:54:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:54:16,006 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 21:54:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:54:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177339022] [2023-08-25 21:54:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177339022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:54:16,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:54:16,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:54:16,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350721886] [2023-08-25 21:54:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:54:16,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:54:16,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:54:16,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:54:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:54:16,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 910 [2023-08-25 21:54:16,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 355 transitions, 1180 flow. Second operand has 6 states, 6 states have (on average 325.6666666666667) internal successors, (1954), 6 states have internal predecessors, (1954), 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 21:54:16,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:54:16,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 910 [2023-08-25 21:54:16,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:55:36,893 INFO L124 PetriNetUnfolderBase]: 492825/770210 cut-off events. [2023-08-25 21:55:36,893 INFO L125 PetriNetUnfolderBase]: For 181922/183070 co-relation queries the response was YES. [2023-08-25 21:55:38,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748633 conditions, 770210 events. 492825/770210 cut-off events. For 181922/183070 co-relation queries the response was YES. Maximal size of possible extension queue 2445. Compared 6439265 event pairs, 171947 based on Foata normal form. 76/671022 useless extension candidates. Maximal degree in co-relation 1748624. Up to 469997 conditions per place. [2023-08-25 21:55:41,605 INFO L140 encePairwiseOnDemand]: 852/910 looper letters, 1142 selfloop transitions, 429 changer transitions 0/1599 dead transitions. [2023-08-25 21:55:41,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1599 transitions, 8619 flow [2023-08-25 21:55:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 21:55:41,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 21:55:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3101 transitions. [2023-08-25 21:55:41,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679487179487179 [2023-08-25 21:55:41,613 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3101 transitions. [2023-08-25 21:55:41,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3101 transitions. [2023-08-25 21:55:41,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:55:41,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3101 transitions. [2023-08-25 21:55:41,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 516.8333333333334) internal successors, (3101), 6 states have internal predecessors, (3101), 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 21:55:41,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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 21:55:41,632 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 910.0) internal successors, (6370), 7 states have internal predecessors, (6370), 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 21:55:41,633 INFO L175 Difference]: Start difference. First operand has 278 places, 355 transitions, 1180 flow. Second operand 6 states and 3101 transitions. [2023-08-25 21:55:41,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1599 transitions, 8619 flow [2023-08-25 21:55:44,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 1599 transitions, 8619 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:55:44,232 INFO L231 Difference]: Finished difference. Result has 288 places, 783 transitions, 4982 flow [2023-08-25 21:55:44,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=910, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4982, PETRI_PLACES=288, PETRI_TRANSITIONS=783} [2023-08-25 21:55:44,233 INFO L281 CegarLoopForPetriNet]: 278 programPoint places, 10 predicate places. [2023-08-25 21:55:44,233 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 783 transitions, 4982 flow [2023-08-25 21:55:44,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 325.6666666666667) internal successors, (1954), 6 states have internal predecessors, (1954), 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 21:55:44,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:55:44,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:55:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:55:44,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 83 more)] === [2023-08-25 21:55:44,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:55:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1985879584, now seen corresponding path program 1 times [2023-08-25 21:55:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:55:44,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380250944] [2023-08-25 21:55:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:55:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:55:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:55:44,532 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 21:55:44,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:55:44,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380250944] [2023-08-25 21:55:44,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380250944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:55:44,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:55:44,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:55:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763525600] [2023-08-25 21:55:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:55:44,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:55:44,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:55:44,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:55:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:55:44,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 910 [2023-08-25 21:55:44,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 783 transitions, 4982 flow. Second operand has 6 states, 6 states have (on average 306.5) internal successors, (1839), 6 states have internal predecessors, (1839), 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 21:55:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:55:44,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 910 [2023-08-25 21:55:44,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand