./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.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-lit/fkp2013_variant-1.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 6f1a33edf94ce8e584ad249b95ad5bb2102c6ab4d820eebd8874b39ecbf22785 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:57:41,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:57:41,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:57:41,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:57:41,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:57:41,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:57:41,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:57:41,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:57:41,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:57:41,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:57:41,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:57:41,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:57:41,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:57:41,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:57:41,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:57:41,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:57:41,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:57:41,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:57:41,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:57:41,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:57:41,058 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:57:41,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:57:41,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:57:41,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:57:41,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:57:41,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:57:41,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:57:41,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:57:41,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:57:41,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:57:41,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:57:41,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:57:41,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:57:41,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:57:41,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:57:41,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:57:41,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:57:41,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:57:41,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:57:41,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:57:41,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:57:41,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:57:41,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:57:41,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:57:41,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:57:41,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:57:41,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:57:41,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:57:41,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:57:41,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:57:41,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:57:41,126 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:57:41,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:57:41,127 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:57:41,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:57:41,128 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:57:41,129 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:57:41,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:57:41,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:57:41,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:57:41,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:57:41,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:57:41,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:57:41,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:41,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:57:41,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:57:41,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:57:41,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:57:41,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:57:41,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:57:41,132 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:57:41,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:57:41,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f1a33edf94ce8e584ad249b95ad5bb2102c6ab4d820eebd8874b39ecbf22785 [2022-04-18 15:57:41,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:57:41,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:57:41,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:57:41,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:57:41,331 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:57:41,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2022-04-18 15:57:41,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a662aa680/66c152801bb74f2a8abc4b45222d0f9a/FLAG7134ad49c [2022-04-18 15:57:41,813 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:57:41,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2022-04-18 15:57:41,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a662aa680/66c152801bb74f2a8abc4b45222d0f9a/FLAG7134ad49c [2022-04-18 15:57:41,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a662aa680/66c152801bb74f2a8abc4b45222d0f9a [2022-04-18 15:57:41,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:57:41,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:57:41,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:41,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:57:41,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:57:41,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:41" (1/1) ... [2022-04-18 15:57:41,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f86ab67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:41, skipping insertion in model container [2022-04-18 15:57:41,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:41" (1/1) ... [2022-04-18 15:57:41,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:57:41,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:57:42,083 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-lit/fkp2013_variant-1.i[30003,30016] [2022-04-18 15:57:42,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:42,118 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:57:42,177 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-lit/fkp2013_variant-1.i[30003,30016] [2022-04-18 15:57:42,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:42,207 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:57:42,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42 WrapperNode [2022-04-18 15:57:42,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:42,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:42,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:57:42,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:57:42,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,240 INFO L137 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-04-18 15:57:42,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:42,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:57:42,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:57:42,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:57:42,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:57:42,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:57:42,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:57:42,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:57:42,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (1/1) ... [2022-04-18 15:57:42,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:42,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:57:42,298 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 15:57:42,300 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 15:57:42,329 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 15:57:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:57:42,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:57:42,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:57:42,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:57:42,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:57:42,332 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 15:57:42,444 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:57:42,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:57:42,603 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:57:42,609 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:57:42,609 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 15:57:42,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:42 BoogieIcfgContainer [2022-04-18 15:57:42,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:57:42,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:57:42,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:57:42,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:57:42,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:57:41" (1/3) ... [2022-04-18 15:57:42,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e4cf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:42, skipping insertion in model container [2022-04-18 15:57:42,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:42" (2/3) ... [2022-04-18 15:57:42,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e4cf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:42, skipping insertion in model container [2022-04-18 15:57:42,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:42" (3/3) ... [2022-04-18 15:57:42,617 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2022-04-18 15:57:42,620 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:57:42,620 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:57:42,620 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-04-18 15:57:42,621 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:57:42,651 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:42,681 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:42,685 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 15:57:42,686 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-04-18 15:57:42,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 228 flow [2022-04-18 15:57:42,727 INFO L129 PetriNetUnfolder]: 4/125 cut-off events. [2022-04-18 15:57:42,728 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:42,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 125 events. 4/125 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 165 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2022-04-18 15:57:42,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 228 flow [2022-04-18 15:57:42,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 108 transitions, 224 flow [2022-04-18 15:57:42,741 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2022-04-18 15:57:42,742 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:42,742 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:42,742 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] [2022-04-18 15:57:42,743 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:42,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:42,746 INFO L85 PathProgramCache]: Analyzing trace with hash 273919009, now seen corresponding path program 1 times [2022-04-18 15:57:42,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:42,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124491282] [2022-04-18 15:57:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:42,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:42,947 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 15:57:42,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:42,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124491282] [2022-04-18 15:57:42,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124491282] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:42,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:42,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402722380] [2022-04-18 15:57:42,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:42,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:42,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:42,989 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-04-18 15:57:42,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 15:57:42,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:42,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-04-18 15:57:42,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:43,085 INFO L129 PetriNetUnfolder]: 21/203 cut-off events. [2022-04-18 15:57:43,085 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 15:57:43,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 203 events. 21/203 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 656 event pairs, 21 based on Foata normal form. 28/198 useless extension candidates. Maximal degree in co-relation 217. Up to 57 conditions per place. [2022-04-18 15:57:43,089 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 14 selfloop transitions, 2 changer transitions 1/103 dead transitions. [2022-04-18 15:57:43,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 246 flow [2022-04-18 15:57:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-04-18 15:57:43,106 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8685015290519877 [2022-04-18 15:57:43,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-04-18 15:57:43,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-04-18 15:57:43,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:43,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-04-18 15:57:43,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 15:57:43,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,127 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,129 INFO L186 Difference]: Start difference. First operand has 111 places, 108 transitions, 224 flow. Second operand 3 states and 284 transitions. [2022-04-18 15:57:43,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 246 flow [2022-04-18 15:57:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 103 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:43,135 INFO L242 Difference]: Finished difference. Result has 110 places, 102 transitions, 215 flow [2022-04-18 15:57:43,137 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=110, PETRI_TRANSITIONS=102} [2022-04-18 15:57:43,140 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2022-04-18 15:57:43,140 INFO L478 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 215 flow [2022-04-18 15:57:43,141 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 15:57:43,141 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:43,141 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] [2022-04-18 15:57:43,141 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:57:43,141 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 285929060, now seen corresponding path program 1 times [2022-04-18 15:57:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:43,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506021396] [2022-04-18 15:57:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:43,203 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 15:57:43,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506021396] [2022-04-18 15:57:43,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506021396] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:43,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:43,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245304161] [2022-04-18 15:57:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:43,205 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:43,206 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-04-18 15:57:43,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 102 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 15:57:43,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:43,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-04-18 15:57:43,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:43,266 INFO L129 PetriNetUnfolder]: 21/268 cut-off events. [2022-04-18 15:57:43,267 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:57:43,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 268 events. 21/268 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1111 event pairs, 21 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 315. Up to 60 conditions per place. [2022-04-18 15:57:43,270 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 14 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-04-18 15:57:43,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 101 transitions, 245 flow [2022-04-18 15:57:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-04-18 15:57:43,272 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8593272171253823 [2022-04-18 15:57:43,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-04-18 15:57:43,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-04-18 15:57:43,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:43,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-04-18 15:57:43,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 15:57:43,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,277 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,277 INFO L186 Difference]: Start difference. First operand has 110 places, 102 transitions, 215 flow. Second operand 3 states and 281 transitions. [2022-04-18 15:57:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 101 transitions, 245 flow [2022-04-18 15:57:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:43,281 INFO L242 Difference]: Finished difference. Result has 108 places, 101 transitions, 213 flow [2022-04-18 15:57:43,281 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=108, PETRI_TRANSITIONS=101} [2022-04-18 15:57:43,282 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2022-04-18 15:57:43,283 INFO L478 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 213 flow [2022-04-18 15:57:43,283 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 15:57:43,283 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:43,284 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] [2022-04-18 15:57:43,284 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:57:43,285 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1679986082, now seen corresponding path program 1 times [2022-04-18 15:57:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:43,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062534487] [2022-04-18 15:57:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:43,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:43,341 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 15:57:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:43,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062534487] [2022-04-18 15:57:43,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062534487] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:43,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:43,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622038668] [2022-04-18 15:57:43,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:43,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:43,343 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2022-04-18 15:57:43,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 101 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 15:57:43,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:43,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2022-04-18 15:57:43,344 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:43,378 INFO L129 PetriNetUnfolder]: 10/224 cut-off events. [2022-04-18 15:57:43,379 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:57:43,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 224 events. 10/224 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 810 event pairs, 10 based on Foata normal form. 0/207 useless extension candidates. Maximal degree in co-relation 232. Up to 30 conditions per place. [2022-04-18 15:57:43,380 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 9 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2022-04-18 15:57:43,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 227 flow [2022-04-18 15:57:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:43,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-04-18 15:57:43,382 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8746177370030581 [2022-04-18 15:57:43,382 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-04-18 15:57:43,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-04-18 15:57:43,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:43,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-04-18 15:57:43,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 15:57:43,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,385 INFO L186 Difference]: Start difference. First operand has 108 places, 101 transitions, 213 flow. Second operand 3 states and 286 transitions. [2022-04-18 15:57:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 227 flow [2022-04-18 15:57:43,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 98 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:43,389 INFO L242 Difference]: Finished difference. Result has 105 places, 98 transitions, 205 flow [2022-04-18 15:57:43,390 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2022-04-18 15:57:43,391 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -6 predicate places. [2022-04-18 15:57:43,392 INFO L478 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 205 flow [2022-04-18 15:57:43,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 15:57:43,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:43,392 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, 1, 1, 1] [2022-04-18 15:57:43,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:57:43,393 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:43,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:43,393 INFO L85 PathProgramCache]: Analyzing trace with hash -249237185, now seen corresponding path program 1 times [2022-04-18 15:57:43,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:43,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36128588] [2022-04-18 15:57:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:43,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:43,449 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 15:57:43,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:43,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36128588] [2022-04-18 15:57:43,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36128588] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:43,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:43,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:43,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876156312] [2022-04-18 15:57:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:43,454 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:43,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:43,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:43,455 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2022-04-18 15:57:43,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 15:57:43,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:43,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2022-04-18 15:57:43,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:43,513 INFO L129 PetriNetUnfolder]: 15/237 cut-off events. [2022-04-18 15:57:43,513 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:57:43,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 237 events. 15/237 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 856 event pairs, 5 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 259. Up to 29 conditions per place. [2022-04-18 15:57:43,516 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 14 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2022-04-18 15:57:43,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 254 flow [2022-04-18 15:57:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-04-18 15:57:43,518 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8960244648318043 [2022-04-18 15:57:43,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-04-18 15:57:43,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-04-18 15:57:43,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:43,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-04-18 15:57:43,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 15:57:43,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,524 INFO L186 Difference]: Start difference. First operand has 105 places, 98 transitions, 205 flow. Second operand 3 states and 293 transitions. [2022-04-18 15:57:43,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 254 flow [2022-04-18 15:57:43,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 103 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:57:43,528 INFO L242 Difference]: Finished difference. Result has 107 places, 100 transitions, 232 flow [2022-04-18 15:57:43,529 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-04-18 15:57:43,530 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -4 predicate places. [2022-04-18 15:57:43,530 INFO L478 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 232 flow [2022-04-18 15:57:43,530 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 15:57:43,534 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:43,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:43,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:57:43,535 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:43,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1058002405, now seen corresponding path program 1 times [2022-04-18 15:57:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:43,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681254218] [2022-04-18 15:57:43,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:43,614 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 15:57:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:43,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681254218] [2022-04-18 15:57:43,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681254218] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:43,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:43,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186580794] [2022-04-18 15:57:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:43,617 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:43,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:43,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:43,623 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 109 [2022-04-18 15:57:43,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 15:57:43,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:43,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 109 [2022-04-18 15:57:43,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:43,680 INFO L129 PetriNetUnfolder]: 19/244 cut-off events. [2022-04-18 15:57:43,680 INFO L130 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2022-04-18 15:57:43,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 244 events. 19/244 cut-off events. For 36/38 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 872 event pairs, 8 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 319. Up to 45 conditions per place. [2022-04-18 15:57:43,682 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 19 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2022-04-18 15:57:43,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 302 flow [2022-04-18 15:57:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2022-04-18 15:57:43,684 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8776758409785933 [2022-04-18 15:57:43,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2022-04-18 15:57:43,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2022-04-18 15:57:43,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:43,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2022-04-18 15:57:43,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 15:57:43,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 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 15:57:43,686 INFO L186 Difference]: Start difference. First operand has 107 places, 100 transitions, 232 flow. Second operand 3 states and 287 transitions. [2022-04-18 15:57:43,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 302 flow [2022-04-18 15:57:43,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 106 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:57:43,689 INFO L242 Difference]: Finished difference. Result has 109 places, 103 transitions, 256 flow [2022-04-18 15:57:43,689 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=109, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2022-04-18 15:57:43,690 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -2 predicate places. [2022-04-18 15:57:43,691 INFO L478 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 256 flow [2022-04-18 15:57:43,691 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 15:57:43,691 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:43,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:57:43,691 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:57:43,692 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2022-04-18 15:57:43,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:43,692 INFO L85 PathProgramCache]: Analyzing trace with hash 224438131, now seen corresponding path program 1 times [2022-04-18 15:57:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:43,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522434787] [2022-04-18 15:57:43,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:43,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:43,712 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:43,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:43,771 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:43,772 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 14 remaining) [2022-04-18 15:57:43,773 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-04-18 15:57:43,773 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-04-18 15:57:43,774 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-04-18 15:57:43,775 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-04-18 15:57:43,775 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-04-18 15:57:43,776 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-04-18 15:57:43,776 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-04-18 15:57:43,776 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-04-18 15:57:43,776 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:57:43,781 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:57:43,786 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 15:57:43,786 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 15:57:43,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:57:43 BasicIcfg [2022-04-18 15:57:43,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 15:57:43,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 15:57:43,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 15:57:43,847 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 15:57:43,847 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:42" (3/4) ... [2022-04-18 15:57:43,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 15:57:43,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 15:57:43,850 INFO L158 Benchmark]: Toolchain (without parser) took 2014.55ms. Allocated memory was 75.5MB in the beginning and 117.4MB in the end (delta: 41.9MB). Free memory was 39.9MB in the beginning and 60.7MB in the end (delta: -20.8MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,850 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:57:43,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.02ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 39.6MB in the beginning and 62.6MB in the end (delta: -23.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,851 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.91ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,851 INFO L158 Benchmark]: Boogie Preprocessor took 25.26ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 59.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,853 INFO L158 Benchmark]: RCFGBuilder took 343.90ms. Allocated memory is still 96.5MB. Free memory was 59.1MB in the beginning and 67.4MB in the end (delta: -8.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,854 INFO L158 Benchmark]: TraceAbstraction took 1234.63ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.8MB in the beginning and 60.7MB in the end (delta: 6.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-04-18 15:57:43,855 INFO L158 Benchmark]: Witness Printer took 2.50ms. Allocated memory is still 117.4MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:57:43,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.4MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 370.02ms. Allocated memory was 75.5MB in the beginning and 96.5MB in the end (delta: 21.0MB). Free memory was 39.6MB in the beginning and 62.6MB in the end (delta: -23.0MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.91ms. Allocated memory is still 96.5MB. Free memory was 62.6MB in the beginning and 60.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.26ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 59.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 343.90ms. Allocated memory is still 96.5MB. Free memory was 59.1MB in the beginning and 67.4MB in the end (delta: -8.3MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1234.63ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 66.8MB in the beginning and 60.7MB in the end (delta: 6.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 2.50ms. Allocated memory is still 117.4MB. Free memory is still 60.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - DataRaceFoundResult [Line: 700]: Data race detected Data race detected The following path leads to a data race: [L697] 0 volatile int x; VAL [x=0] [L698] 0 volatile int n; VAL [n=0, x=0] [L710] 0 pthread_t t1, t2; VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, n=0, t1={5:0}, t2={3:0}, x=0] [L711] 0 int i; VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, n=0, t1={5:0}, t2={3:0}, x=0] [L712] 0 x = 0 VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, n=0, t1={5:0}, t2={3:0}, x=0] [L713] 0 n = __VERIFIER_nondet_int() VAL [\old(argc)=51, __VERIFIER_nondet_int()=1, argc=51, argv={53:52}, argv={53:52}, n=1, n = __VERIFIER_nondet_int()=50, t1={5:0}, t2={3:0}, x=0] [L714] EXPR 0 n > 0 VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, n=1, t1={5:0}, t2={3:0}, x=0] [L714] CALL 0 assume_abort_if_not(n > 0) [L686] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, n=1, x=0] [L714] RET 0 assume_abort_if_not(n > 0) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, n=1, pthread_create(&t1, 0, thr1, 0)=-1, t1={5:0}, t2={3:0}, x=0] [L716] 0 i = 0 VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L716] 0 i < n VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L716] COND TRUE 0 i < n VAL [\old(argc)=51, argc=51, argv={53:52}, argv={53:52}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={53:52}, argv={53:52}, i=0, n=1, pthread_create(&t2, 0, thr2, 0)=0, t1={5:0}, t2={3:0}, x=0] [L700] 1 x <= n VAL [arg={0:0}, arg={0:0}, arg={0:0}, n=1, x=0] [L704] 2 int t; VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L705] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L706] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1, x = t + 1=54] [L700] 1 x <= n VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, n=1, t=0, x=1, x = t + 1=54] Now there is a data race on ~x~0 between C: x = t + 1 [706] and C: x <= n [700] - UnprovableResult [Line: 705]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 712]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 141 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 73 IncrementalHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 52 mSDtfsCounter, 73 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=5, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 263 NumberOfCodeBlocks, 263 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-04-18 15:57:43,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE