./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:55:18,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:55:18,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:55:18,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:55:18,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:55:18,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:55:18,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:55:18,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:55:18,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:55:18,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:55:18,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:55:18,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:55:18,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:55:18,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:55:18,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:55:18,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:55:18,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:55:18,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:55:18,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:55:18,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:55:18,935 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:55:18,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:55:18,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:55:18,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:55:18,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:55:18,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:55:18,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:55:18,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:55:18,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:55:18,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:55:18,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:55:18,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:55:18,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:55:18,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:55:18,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:55:18,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:55:18,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:55:18,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:55:18,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:55:18,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:55:18,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:55:18,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:55:18,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:55:18,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:55:18,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:55:18,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:55:18,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:55:18,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:55:18,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:55:18,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:55:18,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:55:18,986 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:55:18,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:55:18,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:55:18,987 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:55:18,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:55:18,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:55:18,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:55:18,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:55:18,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:55:18,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:55:18,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:55:18,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:55:18,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:18,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:55:18,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:55:18,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:55:18,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:55:18,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:55:18,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:55:18,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:55:18,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:55:18,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a025fe4ca65874bde9a09e6a2d9fa9eceda581ed1bc5b23e0ff5285795ed115b [2022-04-18 15:55:19,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:55:19,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:55:19,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:55:19,182 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:55:19,183 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:55:19,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2022-04-18 15:55:19,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fe9cf40/a0ca352b298640719e7e3a0afb6d92db/FLAG1d2c6e4a8 [2022-04-18 15:55:19,604 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:55:19,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i [2022-04-18 15:55:19,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fe9cf40/a0ca352b298640719e7e3a0afb6d92db/FLAG1d2c6e4a8 [2022-04-18 15:55:19,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fe9cf40/a0ca352b298640719e7e3a0afb6d92db [2022-04-18 15:55:19,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:55:19,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:55:19,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:19,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:55:19,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:55:19,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:19" (1/1) ... [2022-04-18 15:55:19,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192e57aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:19, skipping insertion in model container [2022-04-18 15:55:19,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:55:19" (1/1) ... [2022-04-18 15:55:19,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:55:20,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:55:20,255 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30285,30298] [2022-04-18 15:55:20,260 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30729,30742] [2022-04-18 15:55:20,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:20,269 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:55:20,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30285,30298] [2022-04-18 15:55:20,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/04_incdec_cas.i[30729,30742] [2022-04-18 15:55:20,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:55:20,362 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:55:20,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20 WrapperNode [2022-04-18 15:55:20,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:55:20,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:20,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:55:20,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:55:20,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,433 INFO L137 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 264 [2022-04-18 15:55:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:55:20,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:55:20,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:55:20,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:55:20,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:55:20,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:55:20,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:55:20,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:55:20,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (1/1) ... [2022-04-18 15:55:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:55:20,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:55:20,505 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) [2022-04-18 15:55:20,506 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 [2022-04-18 15:55:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:55:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:55:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:55:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:55:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:55:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:55:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:55:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:55:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:55:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:55:20,535 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:55:20,609 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:55:20,611 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:55:20,940 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:55:21,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:55:21,101 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:55:21,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:21 BoogieIcfgContainer [2022-04-18 15:55:21,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:55:21,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:55:21,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:55:21,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:55:21,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:55:19" (1/3) ... [2022-04-18 15:55:21,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9a62da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:21, skipping insertion in model container [2022-04-18 15:55:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:55:20" (2/3) ... [2022-04-18 15:55:21,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9a62da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:55:21, skipping insertion in model container [2022-04-18 15:55:21,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:55:21" (3/3) ... [2022-04-18 15:55:21,110 INFO L111 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2022-04-18 15:55:21,114 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:55:21,114 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:55:21,114 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-04-18 15:55:21,114 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:55:21,198 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:21,246 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:21,253 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:55:21,253 INFO L341 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-04-18 15:55:21,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 136 places, 141 transitions, 287 flow [2022-04-18 15:55:21,317 INFO L129 PetriNetUnfolder]: 9/152 cut-off events. [2022-04-18 15:55:21,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:21,322 INFO L84 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 152 events. 9/152 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 341 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2022-04-18 15:55:21,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 141 transitions, 287 flow [2022-04-18 15:55:21,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 141 transitions, 287 flow [2022-04-18 15:55:21,341 INFO L129 PetriNetUnfolder]: 2/55 cut-off events. [2022-04-18 15:55:21,341 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:55:21,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:21,342 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:21,343 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:55:21,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2113398464, now seen corresponding path program 1 times [2022-04-18 15:55:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:21,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781689084] [2022-04-18 15:55:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:21,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:21,460 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:21,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:21,529 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:21,530 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2022-04-18 15:55:21,531 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2022-04-18 15:55:21,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2022-04-18 15:55:21,532 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2022-04-18 15:55:21,533 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2022-04-18 15:55:21,533 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2022-04-18 15:55:21,533 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2022-04-18 15:55:21,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2022-04-18 15:55:21,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2022-04-18 15:55:21,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2022-04-18 15:55:21,534 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2022-04-18 15:55:21,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2022-04-18 15:55:21,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2022-04-18 15:55:21,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2022-04-18 15:55:21,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2022-04-18 15:55:21,535 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2022-04-18 15:55:21,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2022-04-18 15:55:21,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2022-04-18 15:55:21,536 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2022-04-18 15:55:21,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2022-04-18 15:55:21,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2022-04-18 15:55:21,537 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2022-04-18 15:55:21,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2022-04-18 15:55:21,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2022-04-18 15:55:21,538 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2022-04-18 15:55:21,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2022-04-18 15:55:21,539 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2022-04-18 15:55:21,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2022-04-18 15:55:21,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2022-04-18 15:55:21,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2022-04-18 15:55:21,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2022-04-18 15:55:21,540 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2022-04-18 15:55:21,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2022-04-18 15:55:21,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2022-04-18 15:55:21,541 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2022-04-18 15:55:21,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2022-04-18 15:55:21,542 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2022-04-18 15:55:21,542 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:55:21,548 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 15:55:21,549 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:21,550 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:55:21,654 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:21,663 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:21,664 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:55:21,664 INFO L341 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-04-18 15:55:21,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 236 places, 246 transitions, 504 flow [2022-04-18 15:55:21,705 INFO L129 PetriNetUnfolder]: 17/270 cut-off events. [2022-04-18 15:55:21,706 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 15:55:21,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 270 events. 17/270 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1043 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 221. Up to 6 conditions per place. [2022-04-18 15:55:21,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 246 transitions, 504 flow [2022-04-18 15:55:21,712 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 246 transitions, 504 flow [2022-04-18 15:55:21,735 INFO L129 PetriNetUnfolder]: 3/86 cut-off events. [2022-04-18 15:55:21,735 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:55:21,735 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:21,735 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:21,736 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err17ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2022-04-18 15:55:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -881691735, now seen corresponding path program 1 times [2022-04-18 15:55:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228301352] [2022-04-18 15:55:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:55:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:21,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228301352] [2022-04-18 15:55:21,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228301352] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:21,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:21,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164614795] [2022-04-18 15:55:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:21,814 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:21,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:21,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:21,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:21,848 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 246 [2022-04-18 15:55:21,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 246 transitions, 504 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 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) [2022-04-18 15:55:21,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:21,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 246 [2022-04-18 15:55:21,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:22,301 INFO L129 PetriNetUnfolder]: 50/621 cut-off events. [2022-04-18 15:55:22,302 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-04-18 15:55:22,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 621 events. 50/621 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3571 event pairs, 20 based on Foata normal form. 51/614 useless extension candidates. Maximal degree in co-relation 174. Up to 51 conditions per place. [2022-04-18 15:55:22,308 INFO L132 encePairwiseOnDemand]: 212/246 looper letters, 10 selfloop transitions, 0 changer transitions 0/207 dead transitions. [2022-04-18 15:55:22,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 207 transitions, 446 flow [2022-04-18 15:55:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 448 transitions. [2022-04-18 15:55:22,319 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9105691056910569 [2022-04-18 15:55:22,320 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 448 transitions. [2022-04-18 15:55:22,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 448 transitions. [2022-04-18 15:55:22,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:22,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 448 transitions. [2022-04-18 15:55:22,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 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) [2022-04-18 15:55:22,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2022-04-18 15:55:22,331 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2022-04-18 15:55:22,333 INFO L186 Difference]: Start difference. First operand has 236 places, 246 transitions, 504 flow. Second operand 2 states and 448 transitions. [2022-04-18 15:55:22,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 207 transitions, 446 flow [2022-04-18 15:55:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 207 transitions, 444 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:22,339 INFO L242 Difference]: Finished difference. Result has 203 places, 207 transitions, 424 flow [2022-04-18 15:55:22,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=424, PETRI_PLACES=203, PETRI_TRANSITIONS=207} [2022-04-18 15:55:22,343 INFO L335 CegarLoopForPetriNet]: 236 programPoint places, -33 predicate places. [2022-04-18 15:55:22,344 INFO L478 AbstractCegarLoop]: Abstraction has has 203 places, 207 transitions, 424 flow [2022-04-18 15:55:22,344 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 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) [2022-04-18 15:55:22,344 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:22,344 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:22,345 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:55:22,345 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 51 more)] === [2022-04-18 15:55:22,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1865462906, now seen corresponding path program 1 times [2022-04-18 15:55:22,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:22,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037595640] [2022-04-18 15:55:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:22,367 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:22,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:22,401 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:22,403 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2022-04-18 15:55:22,403 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 55 remaining) [2022-04-18 15:55:22,403 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 55 remaining) [2022-04-18 15:55:22,403 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 55 remaining) [2022-04-18 15:55:22,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 55 remaining) [2022-04-18 15:55:22,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 55 remaining) [2022-04-18 15:55:22,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 55 remaining) [2022-04-18 15:55:22,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 55 remaining) [2022-04-18 15:55:22,404 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (46 of 55 remaining) [2022-04-18 15:55:22,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 55 remaining) [2022-04-18 15:55:22,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 55 remaining) [2022-04-18 15:55:22,405 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 55 remaining) [2022-04-18 15:55:22,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 55 remaining) [2022-04-18 15:55:22,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (41 of 55 remaining) [2022-04-18 15:55:22,406 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 55 remaining) [2022-04-18 15:55:22,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 55 remaining) [2022-04-18 15:55:22,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 55 remaining) [2022-04-18 15:55:22,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 55 remaining) [2022-04-18 15:55:22,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 55 remaining) [2022-04-18 15:55:22,407 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 55 remaining) [2022-04-18 15:55:22,408 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (23 of 55 remaining) [2022-04-18 15:55:22,409 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (22 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (21 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (20 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 55 remaining) [2022-04-18 15:55:22,410 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 55 remaining) [2022-04-18 15:55:22,411 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 55 remaining) [2022-04-18 15:55:22,412 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 55 remaining) [2022-04-18 15:55:22,412 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 55 remaining) [2022-04-18 15:55:22,412 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 55 remaining) [2022-04-18 15:55:22,412 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 55 remaining) [2022-04-18 15:55:22,412 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:55:22,413 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 15:55:22,413 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:22,413 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:55:22,510 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:22,511 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:22,511 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:55:22,511 INFO L341 AbstractCegarLoop]: Starting to check reachability of 73 error locations. [2022-04-18 15:55:22,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 336 places, 351 transitions, 723 flow [2022-04-18 15:55:22,578 INFO L129 PetriNetUnfolder]: 25/388 cut-off events. [2022-04-18 15:55:22,578 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-04-18 15:55:22,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 388 events. 25/388 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1798 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 325. Up to 8 conditions per place. [2022-04-18 15:55:22,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 336 places, 351 transitions, 723 flow [2022-04-18 15:55:22,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 351 transitions, 723 flow [2022-04-18 15:55:22,597 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2022-04-18 15:55:22,597 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:55:22,597 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:22,598 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:22,601 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err17ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2022-04-18 15:55:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1631893953, now seen corresponding path program 1 times [2022-04-18 15:55:22,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:22,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300537343] [2022-04-18 15:55:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:55:22,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:22,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300537343] [2022-04-18 15:55:22,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300537343] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:22,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:22,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:22,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062634456] [2022-04-18 15:55:22,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:22,652 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:22,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:22,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:22,654 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 351 [2022-04-18 15:55:22,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 351 transitions, 723 flow. Second operand has 2 states, 2 states have (on average 287.5) internal successors, (575), 2 states have internal predecessors, (575), 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) [2022-04-18 15:55:22,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:22,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 351 [2022-04-18 15:55:22,655 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:23,869 INFO L129 PetriNetUnfolder]: 375/3216 cut-off events. [2022-04-18 15:55:23,869 INFO L130 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-04-18 15:55:23,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 3216 events. 375/3216 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 30908 event pairs, 220 based on Foata normal form. 316/3227 useless extension candidates. Maximal degree in co-relation 689. Up to 376 conditions per place. [2022-04-18 15:55:23,905 INFO L132 encePairwiseOnDemand]: 301/351 looper letters, 15 selfloop transitions, 0 changer transitions 0/296 dead transitions. [2022-04-18 15:55:23,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 296 transitions, 643 flow [2022-04-18 15:55:23,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:23,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 637 transitions. [2022-04-18 15:55:23,908 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2022-04-18 15:55:23,908 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 637 transitions. [2022-04-18 15:55:23,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 637 transitions. [2022-04-18 15:55:23,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:23,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 637 transitions. [2022-04-18 15:55:23,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 318.5) internal successors, (637), 2 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:55:23,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 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) [2022-04-18 15:55:23,912 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 351.0) internal successors, (1053), 3 states have internal predecessors, (1053), 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) [2022-04-18 15:55:23,912 INFO L186 Difference]: Start difference. First operand has 336 places, 351 transitions, 723 flow. Second operand 2 states and 637 transitions. [2022-04-18 15:55:23,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 296 transitions, 643 flow [2022-04-18 15:55:23,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 296 transitions, 637 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:23,917 INFO L242 Difference]: Finished difference. Result has 289 places, 296 transitions, 607 flow [2022-04-18 15:55:23,918 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=607, PETRI_PLACES=289, PETRI_TRANSITIONS=296} [2022-04-18 15:55:23,919 INFO L335 CegarLoopForPetriNet]: 336 programPoint places, -47 predicate places. [2022-04-18 15:55:23,920 INFO L478 AbstractCegarLoop]: Abstraction has has 289 places, 296 transitions, 607 flow [2022-04-18 15:55:23,920 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 287.5) internal successors, (575), 2 states have internal predecessors, (575), 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) [2022-04-18 15:55:23,921 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:23,921 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:23,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:55:23,921 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2022-04-18 15:55:23,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1516496891, now seen corresponding path program 1 times [2022-04-18 15:55:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:23,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98093692] [2022-04-18 15:55:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:23,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:55:24,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:24,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98093692] [2022-04-18 15:55:24,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98093692] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:24,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:24,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:55:24,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434246218] [2022-04-18 15:55:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:24,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:55:24,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:55:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:55:24,026 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 351 [2022-04-18 15:55:24,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 296 transitions, 607 flow. Second operand has 6 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 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) [2022-04-18 15:55:24,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:24,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 351 [2022-04-18 15:55:24,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:52,378 INFO L129 PetriNetUnfolder]: 117428/270988 cut-off events. [2022-04-18 15:55:52,378 INFO L130 PetriNetUnfolder]: For 4243/4243 co-relation queries the response was YES. [2022-04-18 15:55:54,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 443630 conditions, 270988 events. 117428/270988 cut-off events. For 4243/4243 co-relation queries the response was YES. Maximal size of possible extension queue 8642. Compared 3879118 event pairs, 31858 based on Foata normal form. 0/241897 useless extension candidates. Maximal degree in co-relation 443624. Up to 84750 conditions per place. [2022-04-18 15:55:55,564 INFO L132 encePairwiseOnDemand]: 309/351 looper letters, 385 selfloop transitions, 72 changer transitions 0/658 dead transitions. [2022-04-18 15:55:55,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 658 transitions, 2285 flow [2022-04-18 15:55:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:55:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:55:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1699 transitions. [2022-04-18 15:55:55,568 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8067426400759734 [2022-04-18 15:55:55,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1699 transitions. [2022-04-18 15:55:55,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1699 transitions. [2022-04-18 15:55:55,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:55,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1699 transitions. [2022-04-18 15:55:55,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.1666666666667) internal successors, (1699), 6 states have internal predecessors, (1699), 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) [2022-04-18 15:55:55,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 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) [2022-04-18 15:55:55,575 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 351.0) internal successors, (2457), 7 states have internal predecessors, (2457), 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) [2022-04-18 15:55:55,576 INFO L186 Difference]: Start difference. First operand has 289 places, 296 transitions, 607 flow. Second operand 6 states and 1699 transitions. [2022-04-18 15:55:55,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 658 transitions, 2285 flow [2022-04-18 15:55:55,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 658 transitions, 2285 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:55,584 INFO L242 Difference]: Finished difference. Result has 299 places, 368 transitions, 1123 flow [2022-04-18 15:55:55,585 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1123, PETRI_PLACES=299, PETRI_TRANSITIONS=368} [2022-04-18 15:55:55,585 INFO L335 CegarLoopForPetriNet]: 336 programPoint places, -37 predicate places. [2022-04-18 15:55:55,585 INFO L478 AbstractCegarLoop]: Abstraction has has 299 places, 368 transitions, 1123 flow [2022-04-18 15:55:55,586 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.5) internal successors, (1245), 6 states have internal predecessors, (1245), 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) [2022-04-18 15:55:55,586 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:55,586 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:55,586 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:55:55,587 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 69 more)] === [2022-04-18 15:55:55,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1251328415, now seen corresponding path program 1 times [2022-04-18 15:55:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:55,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438350250] [2022-04-18 15:55:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:55,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:55:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:55:55,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:55:55,635 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (72 of 73 remaining) [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (71 of 73 remaining) [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (70 of 73 remaining) [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (69 of 73 remaining) [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (68 of 73 remaining) [2022-04-18 15:55:55,635 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (67 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (66 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (65 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (64 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (63 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (62 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (61 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (60 of 73 remaining) [2022-04-18 15:55:55,636 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (59 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (58 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (57 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (56 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (55 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (54 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (53 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (52 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (51 of 73 remaining) [2022-04-18 15:55:55,637 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (50 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (49 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (48 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (47 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (46 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (45 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (44 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (43 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (42 of 73 remaining) [2022-04-18 15:55:55,638 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (41 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (39 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (38 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (37 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (36 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (35 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (34 of 73 remaining) [2022-04-18 15:55:55,639 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (33 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (32 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (30 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (27 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 73 remaining) [2022-04-18 15:55:55,640 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (23 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (22 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (21 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (20 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (18 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (17 of 73 remaining) [2022-04-18 15:55:55,641 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (16 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16ASSERT_VIOLATIONDATA_RACE (15 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17ASSERT_VIOLATIONDATA_RACE (14 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (12 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (10 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 73 remaining) [2022-04-18 15:55:55,642 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (7 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (6 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (5 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (4 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (3 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (2 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (1 of 73 remaining) [2022-04-18 15:55:55,643 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15ASSERT_VIOLATIONDATA_RACE (0 of 73 remaining) [2022-04-18 15:55:55,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:55:55,644 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:55:55,644 WARN L232 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:55:55,644 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-04-18 15:55:55,741 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:55:55,743 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:55:55,744 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:55:55,744 INFO L341 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2022-04-18 15:55:55,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 436 places, 456 transitions, 944 flow [2022-04-18 15:55:55,829 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2022-04-18 15:55:55,829 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-04-18 15:55:55,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 506 events. 33/506 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2574 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 429. Up to 10 conditions per place. [2022-04-18 15:55:55,845 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 456 transitions, 944 flow [2022-04-18 15:55:55,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 456 transitions, 944 flow [2022-04-18 15:55:55,860 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2022-04-18 15:55:55,860 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:55:55,860 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:55,860 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:55,861 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err16ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2022-04-18 15:55:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:55,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1201522880, now seen corresponding path program 1 times [2022-04-18 15:55:55,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:55,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211238908] [2022-04-18 15:55:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:55,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:55:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:55,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211238908] [2022-04-18 15:55:55,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211238908] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:55,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:55,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:55:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104304992] [2022-04-18 15:55:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:55,900 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:55:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:55:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:55:55,902 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 456 [2022-04-18 15:55:55,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 456 transitions, 944 flow. Second operand has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 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) [2022-04-18 15:55:55,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:55,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 456 [2022-04-18 15:55:55,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:59,178 INFO L129 PetriNetUnfolder]: 2500/16691 cut-off events. [2022-04-18 15:55:59,179 INFO L130 PetriNetUnfolder]: For 2166/2166 co-relation queries the response was YES. [2022-04-18 15:55:59,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20439 conditions, 16691 events. 2500/16691 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 219409 event pairs, 1720 based on Foata normal form. 1891/17040 useless extension candidates. Maximal degree in co-relation 3819. Up to 2501 conditions per place. [2022-04-18 15:55:59,388 INFO L132 encePairwiseOnDemand]: 390/456 looper letters, 20 selfloop transitions, 0 changer transitions 0/385 dead transitions. [2022-04-18 15:55:59,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 385 transitions, 842 flow [2022-04-18 15:55:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:55:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:55:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 826 transitions. [2022-04-18 15:55:59,391 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9057017543859649 [2022-04-18 15:55:59,391 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 826 transitions. [2022-04-18 15:55:59,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 826 transitions. [2022-04-18 15:55:59,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:59,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 826 transitions. [2022-04-18 15:55:59,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 413.0) internal successors, (826), 2 states have internal predecessors, (826), 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) [2022-04-18 15:55:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 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) [2022-04-18 15:55:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 456.0) internal successors, (1368), 3 states have internal predecessors, (1368), 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) [2022-04-18 15:55:59,396 INFO L186 Difference]: Start difference. First operand has 436 places, 456 transitions, 944 flow. Second operand 2 states and 826 transitions. [2022-04-18 15:55:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 385 transitions, 842 flow [2022-04-18 15:55:59,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 385 transitions, 830 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:59,403 INFO L242 Difference]: Finished difference. Result has 375 places, 385 transitions, 790 flow [2022-04-18 15:55:59,404 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=790, PETRI_PLACES=375, PETRI_TRANSITIONS=385} [2022-04-18 15:55:59,405 INFO L335 CegarLoopForPetriNet]: 436 programPoint places, -61 predicate places. [2022-04-18 15:55:59,405 INFO L478 AbstractCegarLoop]: Abstraction has has 375 places, 385 transitions, 790 flow [2022-04-18 15:55:59,405 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 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) [2022-04-18 15:55:59,405 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:59,405 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:55:59,406 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:55:59,406 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err8ASSERT_VIOLATIONDATA_RACE, thr1Err16ASSERT_VIOLATIONDATA_RACE, thr1Err17ASSERT_VIOLATIONDATA_RACE (and 87 more)] === [2022-04-18 15:55:59,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:59,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1948470523, now seen corresponding path program 1 times [2022-04-18 15:55:59,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:59,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335048294] [2022-04-18 15:55:59,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:55:59,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:59,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335048294] [2022-04-18 15:55:59,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335048294] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:59,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:59,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:55:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137359668] [2022-04-18 15:55:59,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:59,471 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:55:59,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:59,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:55:59,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:55:59,473 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 456 [2022-04-18 15:55:59,474 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 385 transitions, 790 flow. Second operand has 6 states, 6 states have (on average 265.5) internal successors, (1593), 6 states have internal predecessors, (1593), 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) [2022-04-18 15:55:59,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:59,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 456 [2022-04-18 15:55:59,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand