./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_good-30.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-deagle/reorder_c11_good-30.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 e9f2c63b5b236ffd2c3c18bb3989267f7d1d50794d9317a52e37b9cf94f3ba35 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:53:39,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:53:39,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:53:39,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:53:39,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:53:39,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:53:39,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:53:39,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:53:39,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:53:39,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:53:39,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:53:39,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:53:39,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:53:39,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:53:39,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:53:39,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:53:39,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:53:39,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:53:39,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:53:39,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:53:39,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:53:39,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:53:39,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:53:39,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:53:39,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:53:39,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:53:39,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:53:39,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:53:39,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:53:39,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:53:39,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:53:39,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:53:39,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:53:39,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:53:39,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:53:39,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:53:39,200 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:53:39,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:53:39,201 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:53:39,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:53:39,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:53:39,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:53:39,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:53:39,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:53:39,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:53:39,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:53:39,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:53:39,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:53:39,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:53:39,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:53:39,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:53:39,232 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:53:39,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:53:39,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:53:39,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:53:39,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:53:39,234 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:53:39,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:53:39,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:53:39,235 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:53:39,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:53:39,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:53:39,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:53:39,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:53:39,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:53:39,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:53:39,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:53:39,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:53:39,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:53:39,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:53:39,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:53:39,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:53:39,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:53:39,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f2c63b5b236ffd2c3c18bb3989267f7d1d50794d9317a52e37b9cf94f3ba35 [2022-04-18 15:53:39,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:53:39,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:53:39,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:53:39,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:53:39,425 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:53:39,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_good-30.i [2022-04-18 15:53:39,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/939ab7178/b0f92668bef646c7aa0325b223d45a45/FLAGe9a7b027f [2022-04-18 15:53:39,893 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:53:39,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/reorder_c11_good-30.i [2022-04-18 15:53:39,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/939ab7178/b0f92668bef646c7aa0325b223d45a45/FLAGe9a7b027f [2022-04-18 15:53:39,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/939ab7178/b0f92668bef646c7aa0325b223d45a45 [2022-04-18 15:53:39,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:53:39,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:53:39,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:53:39,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:53:39,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:53:39,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:53:39" (1/1) ... [2022-04-18 15:53:39,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438ad9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:39, skipping insertion in model container [2022-04-18 15:53:39,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:53:39" (1/1) ... [2022-04-18 15:53:39,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:53:39,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:53:40,168 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-deagle/reorder_c11_good-30.i[30195,30208] [2022-04-18 15:53:40,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:53:40,194 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:53:40,225 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-deagle/reorder_c11_good-30.i[30195,30208] [2022-04-18 15:53:40,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:53:40,255 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:53:40,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40 WrapperNode [2022-04-18 15:53:40,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:53:40,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:53:40,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:53:40,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:53:40,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,290 INFO L137 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 137 [2022-04-18 15:53:40,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:53:40,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:53:40,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:53:40,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:53:40,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:53:40,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:53:40,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:53:40,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:53:40,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (1/1) ... [2022-04-18 15:53:40,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:53:40,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:40,345 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 15:53:40,354 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 15:53:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-04-18 15:53:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:53:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-04-18 15:53:40,369 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-04-18 15:53:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:53:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 15:53:40,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:53:40,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:53:40,371 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 15:53:40,444 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:53:40,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:53:40,700 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:53:40,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:53:40,724 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-04-18 15:53:40,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:53:40 BoogieIcfgContainer [2022-04-18 15:53:40,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:53:40,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:53:40,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:53:40,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:53:40,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:53:39" (1/3) ... [2022-04-18 15:53:40,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e27366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:53:40, skipping insertion in model container [2022-04-18 15:53:40,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:53:40" (2/3) ... [2022-04-18 15:53:40,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e27366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:53:40, skipping insertion in model container [2022-04-18 15:53:40,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:53:40" (3/3) ... [2022-04-18 15:53:40,733 INFO L111 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-30.i [2022-04-18 15:53:40,736 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:53:40,736 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:53:40,736 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-04-18 15:53:40,737 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:53:40,778 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 15:53:40,809 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:40,814 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 15:53:40,814 INFO L341 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-04-18 15:53:40,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 202 places, 209 transitions, 440 flow [2022-04-18 15:53:40,934 INFO L129 PetriNetUnfolder]: 30/519 cut-off events. [2022-04-18 15:53:40,935 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:53:40,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 519 events. 30/519 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2078 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 246. Up to 8 conditions per place. [2022-04-18 15:53:40,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 209 transitions, 440 flow [2022-04-18 15:53:40,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 209 transitions, 440 flow [2022-04-18 15:53:40,978 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:40,979 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:40,979 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:40,980 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] [2022-04-18 15:53:40,980 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:40,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1256747734, now seen corresponding path program 1 times [2022-04-18 15:53:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:41,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653218546] [2022-04-18 15:53:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:41,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:41,201 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 15:53:41,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:41,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653218546] [2022-04-18 15:53:41,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653218546] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:41,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:41,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:41,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127365846] [2022-04-18 15:53:41,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:41,210 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:41,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:41,250 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-04-18 15:53:41,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 209 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 15:53:41,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:41,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-04-18 15:53:41,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:41,499 INFO L129 PetriNetUnfolder]: 192/1100 cut-off events. [2022-04-18 15:53:41,499 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-04-18 15:53:41,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 1100 events. 192/1100 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6055 event pairs, 168 based on Foata normal form. 126/1044 useless extension candidates. Maximal degree in co-relation 1271. Up to 521 conditions per place. [2022-04-18 15:53:41,508 INFO L132 encePairwiseOnDemand]: 199/209 looper letters, 68 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2022-04-18 15:53:41,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 196 transitions, 554 flow [2022-04-18 15:53:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-04-18 15:53:41,523 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7416267942583732 [2022-04-18 15:53:41,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:41,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 15:53:41,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:41,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:41,542 INFO L186 Difference]: Start difference. First operand has 202 places, 209 transitions, 440 flow. Second operand 3 states and 465 transitions. [2022-04-18 15:53:41,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 196 transitions, 554 flow [2022-04-18 15:53:41,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:41,553 INFO L242 Difference]: Finished difference. Result has 196 places, 196 transitions, 418 flow [2022-04-18 15:53:41,554 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2022-04-18 15:53:41,558 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -6 predicate places. [2022-04-18 15:53:41,559 INFO L478 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 418 flow [2022-04-18 15:53:41,559 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 15:53:41,559 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:41,559 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] [2022-04-18 15:53:41,560 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:53:41,560 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 542244653, now seen corresponding path program 1 times [2022-04-18 15:53:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:41,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897125434] [2022-04-18 15:53:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:41,627 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 15:53:41,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897125434] [2022-04-18 15:53:41,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897125434] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:41,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:41,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:41,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165783149] [2022-04-18 15:53:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:41,631 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:41,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:41,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:41,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:41,632 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 209 [2022-04-18 15:53:41,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 15:53:41,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:41,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 209 [2022-04-18 15:53:41,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:41,800 INFO L129 PetriNetUnfolder]: 156/991 cut-off events. [2022-04-18 15:53:41,801 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-04-18 15:53:41,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 991 events. 156/991 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5311 event pairs, 78 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1402. Up to 243 conditions per place. [2022-04-18 15:53:41,809 INFO L132 encePairwiseOnDemand]: 186/209 looper letters, 46 selfloop transitions, 11 changer transitions 0/186 dead transitions. [2022-04-18 15:53:41,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 186 transitions, 512 flow [2022-04-18 15:53:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:41,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:41,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2022-04-18 15:53:41,812 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7416267942583732 [2022-04-18 15:53:41,812 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:41,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2022-04-18 15:53:41,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 15:53:41,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:41,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:41,816 INFO L186 Difference]: Start difference. First operand has 196 places, 196 transitions, 418 flow. Second operand 3 states and 465 transitions. [2022-04-18 15:53:41,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 186 transitions, 512 flow [2022-04-18 15:53:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 186 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:41,823 INFO L242 Difference]: Finished difference. Result has 184 places, 184 transitions, 412 flow [2022-04-18 15:53:41,823 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=412, PETRI_PLACES=184, PETRI_TRANSITIONS=184} [2022-04-18 15:53:41,824 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -18 predicate places. [2022-04-18 15:53:41,824 INFO L478 AbstractCegarLoop]: Abstraction has has 184 places, 184 transitions, 412 flow [2022-04-18 15:53:41,825 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 15:53:41,825 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:41,825 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] [2022-04-18 15:53:41,825 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:53:41,825 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:41,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:41,826 INFO L85 PathProgramCache]: Analyzing trace with hash -244278961, now seen corresponding path program 1 times [2022-04-18 15:53:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119611725] [2022-04-18 15:53:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:41,887 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 15:53:41,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119611725] [2022-04-18 15:53:41,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119611725] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:41,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:41,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:53:41,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726515148] [2022-04-18 15:53:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:41,890 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:41,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:41,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:41,892 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 209 [2022-04-18 15:53:41,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 184 transitions, 412 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 15:53:41,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:41,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 209 [2022-04-18 15:53:41,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:42,021 INFO L129 PetriNetUnfolder]: 99/692 cut-off events. [2022-04-18 15:53:42,022 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 15:53:42,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1049 conditions, 692 events. 99/692 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2500 event pairs, 52 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 804. Up to 160 conditions per place. [2022-04-18 15:53:42,026 INFO L132 encePairwiseOnDemand]: 197/209 looper letters, 61 selfloop transitions, 8 changer transitions 9/210 dead transitions. [2022-04-18 15:53:42,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 210 transitions, 612 flow [2022-04-18 15:53:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 540 transitions. [2022-04-18 15:53:42,029 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.861244019138756 [2022-04-18 15:53:42,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 540 transitions. [2022-04-18 15:53:42,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 540 transitions. [2022-04-18 15:53:42,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:42,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 540 transitions. [2022-04-18 15:53:42,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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 15:53:42,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,033 INFO L186 Difference]: Start difference. First operand has 184 places, 184 transitions, 412 flow. Second operand 3 states and 540 transitions. [2022-04-18 15:53:42,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 210 transitions, 612 flow [2022-04-18 15:53:42,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 210 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:42,039 INFO L242 Difference]: Finished difference. Result has 185 places, 177 transitions, 408 flow [2022-04-18 15:53:42,040 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=185, PETRI_TRANSITIONS=177} [2022-04-18 15:53:42,041 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -17 predicate places. [2022-04-18 15:53:42,042 INFO L478 AbstractCegarLoop]: Abstraction has has 185 places, 177 transitions, 408 flow [2022-04-18 15:53:42,042 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 15:53:42,042 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:42,042 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 15:53:42,043 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:53:42,043 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:42,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1964509480, now seen corresponding path program 1 times [2022-04-18 15:53:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:42,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814646686] [2022-04-18 15:53:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:42,074 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 15:53:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814646686] [2022-04-18 15:53:42,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814646686] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:42,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:42,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073747754] [2022-04-18 15:53:42,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:42,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:42,078 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-04-18 15:53:42,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 177 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 15:53:42,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:42,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-04-18 15:53:42,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:42,183 INFO L129 PetriNetUnfolder]: 113/699 cut-off events. [2022-04-18 15:53:42,183 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-04-18 15:53:42,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1084 conditions, 699 events. 113/699 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2502 event pairs, 99 based on Foata normal form. 0/644 useless extension candidates. Maximal degree in co-relation 854. Up to 302 conditions per place. [2022-04-18 15:53:42,188 INFO L132 encePairwiseOnDemand]: 206/209 looper letters, 57 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2022-04-18 15:53:42,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 178 transitions, 528 flow [2022-04-18 15:53:42,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-04-18 15:53:42,190 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7129186602870813 [2022-04-18 15:53:42,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-04-18 15:53:42,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-04-18 15:53:42,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:42,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-04-18 15:53:42,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 15:53:42,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,195 INFO L186 Difference]: Start difference. First operand has 185 places, 177 transitions, 408 flow. Second operand 3 states and 447 transitions. [2022-04-18 15:53:42,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 178 transitions, 528 flow [2022-04-18 15:53:42,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 178 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:53:42,200 INFO L242 Difference]: Finished difference. Result has 177 places, 176 transitions, 402 flow [2022-04-18 15:53:42,200 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-04-18 15:53:42,201 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -25 predicate places. [2022-04-18 15:53:42,201 INFO L478 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 402 flow [2022-04-18 15:53:42,202 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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 15:53:42,202 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:42,202 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 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 15:53:42,203 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:53:42,203 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:42,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -90039509, now seen corresponding path program 1 times [2022-04-18 15:53:42,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:42,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433732627] [2022-04-18 15:53:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:42,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:42,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:42,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433732627] [2022-04-18 15:53:42,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433732627] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:42,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40068250] [2022-04-18 15:53:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:42,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:42,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:53:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:42,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:42,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:42,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:42,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40068250] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:42,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:42,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566613801] [2022-04-18 15:53:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:42,390 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:42,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:42,391 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 209 [2022-04-18 15:53:42,392 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 15:53:42,392 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:42,392 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 209 [2022-04-18 15:53:42,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:42,505 INFO L129 PetriNetUnfolder]: 111/694 cut-off events. [2022-04-18 15:53:42,505 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-04-18 15:53:42,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 694 events. 111/694 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2475 event pairs, 97 based on Foata normal form. 0/642 useless extension candidates. Maximal degree in co-relation 841. Up to 297 conditions per place. [2022-04-18 15:53:42,509 INFO L132 encePairwiseOnDemand]: 206/209 looper letters, 56 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2022-04-18 15:53:42,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 177 transitions, 520 flow [2022-04-18 15:53:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2022-04-18 15:53:42,510 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7113237639553429 [2022-04-18 15:53:42,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2022-04-18 15:53:42,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2022-04-18 15:53:42,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:42,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2022-04-18 15:53:42,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 15:53:42,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 15:53:42,513 INFO L186 Difference]: Start difference. First operand has 177 places, 176 transitions, 402 flow. Second operand 3 states and 446 transitions. [2022-04-18 15:53:42,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 177 transitions, 520 flow [2022-04-18 15:53:42,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 177 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:42,516 INFO L242 Difference]: Finished difference. Result has 176 places, 175 transitions, 400 flow [2022-04-18 15:53:42,517 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=176, PETRI_TRANSITIONS=175} [2022-04-18 15:53:42,517 INFO L335 CegarLoopForPetriNet]: 202 programPoint places, -26 predicate places. [2022-04-18 15:53:42,518 INFO L478 AbstractCegarLoop]: Abstraction has has 176 places, 175 transitions, 400 flow [2022-04-18 15:53:42,518 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 15:53:42,518 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:42,518 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:42,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:53:42,735 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:42,736 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2022-04-18 15:53:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash -182646682, now seen corresponding path program 1 times [2022-04-18 15:53:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:42,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288919147] [2022-04-18 15:53:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:42,756 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:53:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:42,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:53:42,785 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:53:42,785 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2022-04-18 15:53:42,787 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2022-04-18 15:53:42,788 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2022-04-18 15:53:42,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2022-04-18 15:53:42,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2022-04-18 15:53:42,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2022-04-18 15:53:42,790 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2022-04-18 15:53:42,791 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2022-04-18 15:53:42,792 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2022-04-18 15:53:42,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2022-04-18 15:53:42,793 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2022-04-18 15:53:42,793 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:53:42,796 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:53:42,797 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:53:42,797 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:53:42,840 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 15:53:42,842 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:42,846 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 15:53:42,846 INFO L341 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-04-18 15:53:42,848 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 247 places, 258 transitions, 564 flow [2022-04-18 15:53:43,001 INFO L129 PetriNetUnfolder]: 125/1733 cut-off events. [2022-04-18 15:53:43,002 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-04-18 15:53:43,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1733 events. 125/1733 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10233 event pairs, 2 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 976. Up to 32 conditions per place. [2022-04-18 15:53:43,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 258 transitions, 564 flow [2022-04-18 15:53:43,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 258 transitions, 564 flow [2022-04-18 15:53:43,024 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:43,024 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:43,024 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:43,024 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] [2022-04-18 15:53:43,024 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:43,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:43,025 INFO L85 PathProgramCache]: Analyzing trace with hash -769199146, now seen corresponding path program 1 times [2022-04-18 15:53:43,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:43,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976732975] [2022-04-18 15:53:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:43,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:43,055 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 15:53:43,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:43,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976732975] [2022-04-18 15:53:43,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976732975] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:43,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:43,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862421383] [2022-04-18 15:53:43,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:43,056 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:43,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:43,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:43,058 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-04-18 15:53:43,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 258 transitions, 564 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 15:53:43,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:43,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-04-18 15:53:43,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:44,199 INFO L129 PetriNetUnfolder]: 2687/8480 cut-off events. [2022-04-18 15:53:44,199 INFO L130 PetriNetUnfolder]: For 648/684 co-relation queries the response was YES. [2022-04-18 15:53:44,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13827 conditions, 8480 events. 2687/8480 cut-off events. For 648/684 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 67367 event pairs, 2481 based on Foata normal form. 2138/9445 useless extension candidates. Maximal degree in co-relation 7264. Up to 5052 conditions per place. [2022-04-18 15:53:44,307 INFO L132 encePairwiseOnDemand]: 245/258 looper letters, 76 selfloop transitions, 2 changer transitions 0/237 dead transitions. [2022-04-18 15:53:44,308 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 237 transitions, 678 flow [2022-04-18 15:53:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2022-04-18 15:53:44,309 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7545219638242894 [2022-04-18 15:53:44,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2022-04-18 15:53:44,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2022-04-18 15:53:44,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:44,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2022-04-18 15:53:44,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 15:53:44,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:44,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:44,313 INFO L186 Difference]: Start difference. First operand has 247 places, 258 transitions, 564 flow. Second operand 3 states and 584 transitions. [2022-04-18 15:53:44,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 237 transitions, 678 flow [2022-04-18 15:53:44,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 237 transitions, 678 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:44,317 INFO L242 Difference]: Finished difference. Result has 234 places, 237 transitions, 526 flow [2022-04-18 15:53:44,317 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=237} [2022-04-18 15:53:44,317 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -13 predicate places. [2022-04-18 15:53:44,318 INFO L478 AbstractCegarLoop]: Abstraction has has 234 places, 237 transitions, 526 flow [2022-04-18 15:53:44,318 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 15:53:44,318 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:44,318 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] [2022-04-18 15:53:44,318 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:53:44,318 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:44,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:44,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1560559827, now seen corresponding path program 1 times [2022-04-18 15:53:44,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:44,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939772004] [2022-04-18 15:53:44,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:44,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:44,334 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 15:53:44,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:44,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939772004] [2022-04-18 15:53:44,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939772004] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:44,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:44,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:44,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649077276] [2022-04-18 15:53:44,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:44,335 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:44,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:44,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:44,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:44,337 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 258 [2022-04-18 15:53:44,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 237 transitions, 526 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:53:44,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:44,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 258 [2022-04-18 15:53:44,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:45,187 INFO L129 PetriNetUnfolder]: 2173/7194 cut-off events. [2022-04-18 15:53:45,187 INFO L130 PetriNetUnfolder]: For 649/685 co-relation queries the response was YES. [2022-04-18 15:53:45,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11495 conditions, 7194 events. 2173/7194 cut-off events. For 649/685 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 55958 event pairs, 1169 based on Foata normal form. 0/6529 useless extension candidates. Maximal degree in co-relation 11458. Up to 2412 conditions per place. [2022-04-18 15:53:45,265 INFO L132 encePairwiseOnDemand]: 235/258 looper letters, 56 selfloop transitions, 11 changer transitions 0/229 dead transitions. [2022-04-18 15:53:45,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 229 transitions, 644 flow [2022-04-18 15:53:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:45,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-04-18 15:53:45,268 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7532299741602068 [2022-04-18 15:53:45,268 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-04-18 15:53:45,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-04-18 15:53:45,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:45,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-04-18 15:53:45,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 15:53:45,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:45,271 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:45,271 INFO L186 Difference]: Start difference. First operand has 234 places, 237 transitions, 526 flow. Second operand 3 states and 583 transitions. [2022-04-18 15:53:45,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 229 transitions, 644 flow [2022-04-18 15:53:45,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 229 transitions, 640 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:45,275 INFO L242 Difference]: Finished difference. Result has 222 places, 225 transitions, 520 flow [2022-04-18 15:53:45,275 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=520, PETRI_PLACES=222, PETRI_TRANSITIONS=225} [2022-04-18 15:53:45,276 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -25 predicate places. [2022-04-18 15:53:45,276 INFO L478 AbstractCegarLoop]: Abstraction has has 222 places, 225 transitions, 520 flow [2022-04-18 15:53:45,276 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:53:45,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:45,276 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] [2022-04-18 15:53:45,277 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:53:45,277 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1634638415, now seen corresponding path program 1 times [2022-04-18 15:53:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422224381] [2022-04-18 15:53:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:45,296 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 15:53:45,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:45,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422224381] [2022-04-18 15:53:45,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422224381] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:45,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:45,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:53:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536163884] [2022-04-18 15:53:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:45,297 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:45,299 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 258 [2022-04-18 15:53:45,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 225 transitions, 520 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 15:53:45,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:45,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 258 [2022-04-18 15:53:45,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:46,361 INFO L129 PetriNetUnfolder]: 2174/7774 cut-off events. [2022-04-18 15:53:46,362 INFO L130 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-04-18 15:53:46,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 7774 events. 2174/7774 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 61731 event pairs, 994 based on Foata normal form. 0/7098 useless extension candidates. Maximal degree in co-relation 5418. Up to 2249 conditions per place. [2022-04-18 15:53:46,428 INFO L132 encePairwiseOnDemand]: 246/258 looper letters, 85 selfloop transitions, 8 changer transitions 0/265 dead transitions. [2022-04-18 15:53:46,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 265 transitions, 810 flow [2022-04-18 15:53:46,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-04-18 15:53:46,430 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8656330749354005 [2022-04-18 15:53:46,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-04-18 15:53:46,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-04-18 15:53:46,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:46,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-04-18 15:53:46,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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 15:53:46,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:46,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:46,433 INFO L186 Difference]: Start difference. First operand has 222 places, 225 transitions, 520 flow. Second operand 3 states and 670 transitions. [2022-04-18 15:53:46,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 265 transitions, 810 flow [2022-04-18 15:53:46,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 265 transitions, 788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:46,438 INFO L242 Difference]: Finished difference. Result has 223 places, 229 transitions, 546 flow [2022-04-18 15:53:46,438 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=223, PETRI_TRANSITIONS=229} [2022-04-18 15:53:46,439 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -24 predicate places. [2022-04-18 15:53:46,439 INFO L478 AbstractCegarLoop]: Abstraction has has 223 places, 229 transitions, 546 flow [2022-04-18 15:53:46,439 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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 15:53:46,440 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:46,440 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 15:53:46,440 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:53:46,440 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1907935581, now seen corresponding path program 1 times [2022-04-18 15:53:46,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894123130] [2022-04-18 15:53:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:46,463 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 15:53:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:46,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894123130] [2022-04-18 15:53:46,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894123130] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:46,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:46,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377904560] [2022-04-18 15:53:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:46,464 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:46,465 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-04-18 15:53:46,466 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 229 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:53:46,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:46,466 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-04-18 15:53:46,466 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:47,365 INFO L129 PetriNetUnfolder]: 2124/7722 cut-off events. [2022-04-18 15:53:47,365 INFO L130 PetriNetUnfolder]: For 740/740 co-relation queries the response was YES. [2022-04-18 15:53:47,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12488 conditions, 7722 events. 2124/7722 cut-off events. For 740/740 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 61372 event pairs, 1928 based on Foata normal form. 0/7175 useless extension candidates. Maximal degree in co-relation 5549. Up to 3941 conditions per place. [2022-04-18 15:53:47,439 INFO L132 encePairwiseOnDemand]: 255/258 looper letters, 67 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-04-18 15:53:47,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 232 transitions, 690 flow [2022-04-18 15:53:47,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2022-04-18 15:53:47,441 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7299741602067183 [2022-04-18 15:53:47,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2022-04-18 15:53:47,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2022-04-18 15:53:47,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:47,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2022-04-18 15:53:47,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 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 15:53:47,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:47,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:47,450 INFO L186 Difference]: Start difference. First operand has 223 places, 229 transitions, 546 flow. Second operand 3 states and 565 transitions. [2022-04-18 15:53:47,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 232 transitions, 690 flow [2022-04-18 15:53:47,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 232 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:53:47,456 INFO L242 Difference]: Finished difference. Result has 223 places, 228 transitions, 540 flow [2022-04-18 15:53:47,456 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=223, PETRI_TRANSITIONS=228} [2022-04-18 15:53:47,457 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -24 predicate places. [2022-04-18 15:53:47,457 INFO L478 AbstractCegarLoop]: Abstraction has has 223 places, 228 transitions, 540 flow [2022-04-18 15:53:47,458 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 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 15:53:47,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:47,458 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 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 15:53:47,458 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:53:47,458 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1454553194, now seen corresponding path program 1 times [2022-04-18 15:53:47,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:47,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023051997] [2022-04-18 15:53:47,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:47,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:47,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023051997] [2022-04-18 15:53:47,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023051997] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:47,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068825543] [2022-04-18 15:53:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:47,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:47,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:47,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:47,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:53:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:47,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:47,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:47,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068825543] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:47,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:47,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:47,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240762771] [2022-04-18 15:53:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:47,648 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:47,649 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 258 [2022-04-18 15:53:47,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 15:53:47,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:47,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 258 [2022-04-18 15:53:47,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:48,811 INFO L129 PetriNetUnfolder]: 2110/7684 cut-off events. [2022-04-18 15:53:48,811 INFO L130 PetriNetUnfolder]: For 751/751 co-relation queries the response was YES. [2022-04-18 15:53:48,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 7684 events. 2110/7684 cut-off events. For 751/751 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 61226 event pairs, 1914 based on Foata normal form. 0/7149 useless extension candidates. Maximal degree in co-relation 5461. Up to 3915 conditions per place. [2022-04-18 15:53:48,869 INFO L132 encePairwiseOnDemand]: 255/258 looper letters, 66 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2022-04-18 15:53:48,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 231 transitions, 682 flow [2022-04-18 15:53:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2022-04-18 15:53:48,871 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7286821705426356 [2022-04-18 15:53:48,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2022-04-18 15:53:48,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2022-04-18 15:53:48,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:48,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2022-04-18 15:53:48,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 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 15:53:48,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:48,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:48,874 INFO L186 Difference]: Start difference. First operand has 223 places, 228 transitions, 540 flow. Second operand 3 states and 564 transitions. [2022-04-18 15:53:48,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 231 transitions, 682 flow [2022-04-18 15:53:48,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 231 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:48,878 INFO L242 Difference]: Finished difference. Result has 222 places, 227 transitions, 538 flow [2022-04-18 15:53:48,879 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=222, PETRI_TRANSITIONS=227} [2022-04-18 15:53:48,879 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -25 predicate places. [2022-04-18 15:53:48,879 INFO L478 AbstractCegarLoop]: Abstraction has has 222 places, 227 transitions, 538 flow [2022-04-18 15:53:48,880 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 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 15:53:48,880 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:48,880 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 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 15:53:48,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 15:53:49,100 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-18 15:53:49,100 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:49,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:49,101 INFO L85 PathProgramCache]: Analyzing trace with hash -672561609, now seen corresponding path program 1 times [2022-04-18 15:53:49,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:49,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388794692] [2022-04-18 15:53:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:49,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:49,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388794692] [2022-04-18 15:53:49,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388794692] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070163048] [2022-04-18 15:53:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:49,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:49,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:49,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:49,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:53:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:49,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 15:53:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-04-18 15:53:49,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:53:49,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070163048] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:49,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:53:49,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-04-18 15:53:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74471901] [2022-04-18 15:53:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:49,262 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:53:49,264 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 258 [2022-04-18 15:53:49,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 227 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 15:53:49,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:49,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 258 [2022-04-18 15:53:49,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:53,352 INFO L129 PetriNetUnfolder]: 6387/38759 cut-off events. [2022-04-18 15:53:53,352 INFO L130 PetriNetUnfolder]: For 9662/86421 co-relation queries the response was YES. [2022-04-18 15:53:53,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51726 conditions, 38759 events. 6387/38759 cut-off events. For 9662/86421 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 547704 event pairs, 1961 based on Foata normal form. 69/32840 useless extension candidates. Maximal degree in co-relation 44214. Up to 4468 conditions per place. [2022-04-18 15:53:53,788 INFO L132 encePairwiseOnDemand]: 244/258 looper letters, 39 selfloop transitions, 10 changer transitions 0/248 dead transitions. [2022-04-18 15:53:53,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 248 transitions, 707 flow [2022-04-18 15:53:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:53:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:53:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2022-04-18 15:53:53,790 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9056847545219638 [2022-04-18 15:53:53,790 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2022-04-18 15:53:53,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2022-04-18 15:53:53,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:53,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2022-04-18 15:53:53,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 15:53:53,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:53,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 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 15:53:53,799 INFO L186 Difference]: Start difference. First operand has 222 places, 227 transitions, 538 flow. Second operand 3 states and 701 transitions. [2022-04-18 15:53:53,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 248 transitions, 707 flow [2022-04-18 15:53:53,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 248 transitions, 703 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:53:53,825 INFO L242 Difference]: Finished difference. Result has 224 places, 237 transitions, 622 flow [2022-04-18 15:53:53,826 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=224, PETRI_TRANSITIONS=237} [2022-04-18 15:53:53,826 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -23 predicate places. [2022-04-18 15:53:53,827 INFO L478 AbstractCegarLoop]: Abstraction has has 224 places, 237 transitions, 622 flow [2022-04-18 15:53:53,827 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 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 15:53:53,828 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:53,828 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 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 15:53:53,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-04-18 15:53:54,028 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:54,029 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting checkThreadErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2086603499, now seen corresponding path program 1 times [2022-04-18 15:53:54,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:54,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499437358] [2022-04-18 15:53:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:54,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:54,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:54,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499437358] [2022-04-18 15:53:54,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499437358] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:53:54,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076089825] [2022-04-18 15:53:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:53:54,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:53:54,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:53:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:54,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:53:54,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:53:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:54,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:53:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:53:54,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076089825] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:53:54,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:53:54,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:53:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684218453] [2022-04-18 15:53:54,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:53:54,361 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:53:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:53:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:53:54,363 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 258 [2022-04-18 15:53:54,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 237 transitions, 622 flow. Second operand has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 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 15:53:54,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:54,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 258 [2022-04-18 15:53:54,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:53:54,434 INFO L129 PetriNetUnfolder]: 76/339 cut-off events. [2022-04-18 15:53:54,434 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-04-18 15:53:54,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 339 events. 76/339 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1177 event pairs, 0 based on Foata normal form. 12/343 useless extension candidates. Maximal degree in co-relation 576. Up to 63 conditions per place. [2022-04-18 15:53:54,436 INFO L132 encePairwiseOnDemand]: 253/258 looper letters, 32 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2022-04-18 15:53:54,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 284 flow [2022-04-18 15:53:54,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:53:54,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:53:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1742 transitions. [2022-04-18 15:53:54,439 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7502153316106804 [2022-04-18 15:53:54,439 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1742 transitions. [2022-04-18 15:53:54,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1742 transitions. [2022-04-18 15:53:54,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:53:54,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1742 transitions. [2022-04-18 15:53:54,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 193.55555555555554) internal successors, (1742), 9 states have internal predecessors, (1742), 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 15:53:54,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 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 15:53:54,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 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 15:53:54,446 INFO L186 Difference]: Start difference. First operand has 224 places, 237 transitions, 622 flow. Second operand 9 states and 1742 transitions. [2022-04-18 15:53:54,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 284 flow [2022-04-18 15:53:54,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 15:53:54,448 INFO L242 Difference]: Finished difference. Result has 77 places, 61 transitions, 156 flow [2022-04-18 15:53:54,448 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=77, PETRI_TRANSITIONS=61} [2022-04-18 15:53:54,449 INFO L335 CegarLoopForPetriNet]: 247 programPoint places, -170 predicate places. [2022-04-18 15:53:54,449 INFO L478 AbstractCegarLoop]: Abstraction has has 77 places, 61 transitions, 156 flow [2022-04-18 15:53:54,450 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 191.9) internal successors, (1919), 10 states have internal predecessors, (1919), 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 15:53:54,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:54,451 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-04-18 15:53:54,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-18 15:53:54,656 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:53:54,656 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2022-04-18 15:53:54,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:54,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1208464956, now seen corresponding path program 1 times [2022-04-18 15:53:54,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:54,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206254160] [2022-04-18 15:53:54,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:54,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:54,666 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:53:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:53:54,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:53:54,700 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:53:54,700 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (41 of 42 remaining) [2022-04-18 15:53:54,700 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (40 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2022-04-18 15:53:54,701 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (32 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2022-04-18 15:53:54,702 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (25 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2022-04-18 15:53:54,703 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (19 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (16 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 42 remaining) [2022-04-18 15:53:54,704 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (11 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (10 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location setThreadErr1ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (7 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2022-04-18 15:53:54,705 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2022-04-18 15:53:54,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr0ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2022-04-18 15:53:54,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr1ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2022-04-18 15:53:54,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr2ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2022-04-18 15:53:54,706 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location checkThreadErr3ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2022-04-18 15:53:54,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:53:54,707 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:53:54,707 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:53:54,707 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:53:54,731 INFO L135 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-04-18 15:53:54,732 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:53:54,733 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 15:53:54,733 INFO L341 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2022-04-18 15:53:54,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 292 places, 307 transitions, 692 flow [2022-04-18 15:53:55,528 INFO L129 PetriNetUnfolder]: 532/5831 cut-off events. [2022-04-18 15:53:55,528 INFO L130 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-04-18 15:53:55,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 5831 events. 532/5831 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 46977 event pairs, 64 based on Foata normal form. 0/4642 useless extension candidates. Maximal degree in co-relation 3329. Up to 192 conditions per place. [2022-04-18 15:53:55,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 307 transitions, 692 flow [2022-04-18 15:53:55,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 307 transitions, 692 flow [2022-04-18 15:53:55,599 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2022-04-18 15:53:55,599 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:53:55,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:53:55,600 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] [2022-04-18 15:53:55,600 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:53:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:53:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1169659001, now seen corresponding path program 1 times [2022-04-18 15:53:55,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:53:55,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084037281] [2022-04-18 15:53:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:53:55,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:53:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:53:55,621 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 15:53:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:53:55,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084037281] [2022-04-18 15:53:55,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084037281] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:53:55,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:53:55,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:53:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090597943] [2022-04-18 15:53:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:53:55,622 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:53:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:53:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:53:55,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:53:55,624 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 307 [2022-04-18 15:53:55,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 307 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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 15:53:55,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:53:55,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 307 [2022-04-18 15:53:55,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:06,418 INFO L129 PetriNetUnfolder]: 28496/68226 cut-off events. [2022-04-18 15:54:06,418 INFO L130 PetriNetUnfolder]: For 7607/7979 co-relation queries the response was YES. [2022-04-18 15:54:07,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116352 conditions, 68226 events. 28496/68226 cut-off events. For 7607/7979 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 678037 event pairs, 26638 based on Foata normal form. 24627/84991 useless extension candidates. Maximal degree in co-relation 61268. Up to 45367 conditions per place. [2022-04-18 15:54:08,194 INFO L132 encePairwiseOnDemand]: 291/307 looper letters, 84 selfloop transitions, 2 changer transitions 0/278 dead transitions. [2022-04-18 15:54:08,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 278 transitions, 806 flow [2022-04-18 15:54:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:54:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:54:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2022-04-18 15:54:08,196 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7633007600434311 [2022-04-18 15:54:08,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2022-04-18 15:54:08,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2022-04-18 15:54:08,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:08,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2022-04-18 15:54:08,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 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 15:54:08,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 15:54:08,199 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 15:54:08,199 INFO L186 Difference]: Start difference. First operand has 292 places, 307 transitions, 692 flow. Second operand 3 states and 703 transitions. [2022-04-18 15:54:08,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 278 transitions, 806 flow [2022-04-18 15:54:08,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 278 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:54:08,207 INFO L242 Difference]: Finished difference. Result has 272 places, 278 transitions, 638 flow [2022-04-18 15:54:08,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=272, PETRI_TRANSITIONS=278} [2022-04-18 15:54:08,208 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, -20 predicate places. [2022-04-18 15:54:08,209 INFO L478 AbstractCegarLoop]: Abstraction has has 272 places, 278 transitions, 638 flow [2022-04-18 15:54:08,209 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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 15:54:08,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:08,209 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] [2022-04-18 15:54:08,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-04-18 15:54:08,209 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:54:08,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash -240648979, now seen corresponding path program 1 times [2022-04-18 15:54:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:08,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478616054] [2022-04-18 15:54:08,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:08,220 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 15:54:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:08,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478616054] [2022-04-18 15:54:08,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478616054] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:08,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:08,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:54:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420737100] [2022-04-18 15:54:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:08,222 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:54:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:54:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:54:08,223 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 307 [2022-04-18 15:54:08,223 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 278 transitions, 638 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 15:54:08,223 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:08,223 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 307 [2022-04-18 15:54:08,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:16,663 INFO L129 PetriNetUnfolder]: 23044/57445 cut-off events. [2022-04-18 15:54:16,664 INFO L130 PetriNetUnfolder]: For 7608/7980 co-relation queries the response was YES. [2022-04-18 15:54:17,607 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96350 conditions, 57445 events. 23044/57445 cut-off events. For 7608/7980 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 571225 event pairs, 12762 based on Foata normal form. 0/53160 useless extension candidates. Maximal degree in co-relation 96311. Up to 22195 conditions per place. [2022-04-18 15:54:18,074 INFO L132 encePairwiseOnDemand]: 284/307 looper letters, 66 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-04-18 15:54:18,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 272 transitions, 780 flow [2022-04-18 15:54:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:54:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:54:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2022-04-18 15:54:18,076 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.761129207383279 [2022-04-18 15:54:18,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2022-04-18 15:54:18,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2022-04-18 15:54:18,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:18,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2022-04-18 15:54:18,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 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 15:54:18,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 15:54:18,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 15:54:18,080 INFO L186 Difference]: Start difference. First operand has 272 places, 278 transitions, 638 flow. Second operand 3 states and 701 transitions. [2022-04-18 15:54:18,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 272 transitions, 780 flow [2022-04-18 15:54:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 272 transitions, 776 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:54:18,087 INFO L242 Difference]: Finished difference. Result has 260 places, 266 transitions, 632 flow [2022-04-18 15:54:18,087 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=632, PETRI_PLACES=260, PETRI_TRANSITIONS=266} [2022-04-18 15:54:18,087 INFO L335 CegarLoopForPetriNet]: 292 programPoint places, -32 predicate places. [2022-04-18 15:54:18,088 INFO L478 AbstractCegarLoop]: Abstraction has has 260 places, 266 transitions, 632 flow [2022-04-18 15:54:18,088 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 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 15:54:18,088 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:18,088 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] [2022-04-18 15:54:18,088 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-04-18 15:54:18,088 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [setThreadErr0ASSERT_VIOLATIONDATA_RACE, setThreadErr1ASSERT_VIOLATIONDATA_RACE, checkThreadErr0ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2022-04-18 15:54:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -824428160, now seen corresponding path program 1 times [2022-04-18 15:54:18,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:18,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465396155] [2022-04-18 15:54:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:18,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:18,101 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 15:54:18,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:18,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465396155] [2022-04-18 15:54:18,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465396155] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:18,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:18,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:54:18,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875962558] [2022-04-18 15:54:18,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:18,102 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:54:18,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:54:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:54:18,104 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 307 [2022-04-18 15:54:18,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 266 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 15:54:18,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:18,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 307 [2022-04-18 15:54:18,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand