./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-2.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-2.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 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:57:42,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:57:42,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:57:42,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:57:42,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:57:42,051 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:57:42,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:57:42,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:57:42,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:57:42,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:57:42,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:57:42,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:57:42,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:57:42,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:57:42,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:57:42,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:57:42,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:57:42,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:57:42,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:57:42,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:57:42,075 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:57:42,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:57:42,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:57:42,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:57:42,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:57:42,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:57:42,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:57:42,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:57:42,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:57:42,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:57:42,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:57:42,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:57:42,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:57:42,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:57:42,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:57:42,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:57:42,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:57:42,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:57:42,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:57:42,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:57:42,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:57:42,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:57:42,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:57:42,113 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:57:42,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:57:42,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:57:42,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:57:42,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:57:42,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:57:42,115 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:57:42,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:57:42,115 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:57:42,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:57:42,116 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:57:42,117 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:57:42,118 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:57:42,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:57:42,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:42,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:57:42,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:57:42,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:57:42,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 [2022-04-18 15:57:42,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:57:42,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:57:42,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:57:42,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:57:42,329 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:57:42,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2022-04-18 15:57:42,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ed8bdbe/10377c6bea014b579a27ec1abf6f6a27/FLAG9a7f56f50 [2022-04-18 15:57:42,756 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:57:42,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-2.i [2022-04-18 15:57:42,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ed8bdbe/10377c6bea014b579a27ec1abf6f6a27/FLAG9a7f56f50 [2022-04-18 15:57:43,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ed8bdbe/10377c6bea014b579a27ec1abf6f6a27 [2022-04-18 15:57:43,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:57:43,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:57:43,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:43,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:57:43,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:57:43,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d685c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43, skipping insertion in model container [2022-04-18 15:57:43,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:57:43,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:57:43,440 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-2.i[30003,30016] [2022-04-18 15:57:43,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:43,467 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:57:43,498 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-2.i[30003,30016] [2022-04-18 15:57:43,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:57:43,538 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:57:43,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43 WrapperNode [2022-04-18 15:57:43,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:57:43,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:43,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:57:43,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:57:43,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,587 INFO L137 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-04-18 15:57:43,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:57:43,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:57:43,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:57:43,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:57:43,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:57:43,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:57:43,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:57:43,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:57:43,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (1/1) ... [2022-04-18 15:57:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:57:43,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:57:43,651 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 15:57:43,658 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 15:57:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-04-18 15:57:43,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-04-18 15:57:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-04-18 15:57:43,683 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-04-18 15:57:43,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:57:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:57:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:57:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:57:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:57:43,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:57:43,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:57:43,685 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 15:57:43,775 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:57:43,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:57:43,922 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:57:43,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:57:43,927 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-18 15:57:43,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:43 BoogieIcfgContainer [2022-04-18 15:57:43,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:57:43,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:57:43,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:57:43,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:57:43,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:57:43" (1/3) ... [2022-04-18 15:57:43,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289b2f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:43, skipping insertion in model container [2022-04-18 15:57:43,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:57:43" (2/3) ... [2022-04-18 15:57:43,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289b2f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:57:43, skipping insertion in model container [2022-04-18 15:57:43,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:43" (3/3) ... [2022-04-18 15:57:43,934 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2022-04-18 15:57:43,937 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:57:43,937 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:57:43,937 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-04-18 15:57:43,937 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:57:43,967 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-04-18 15:57:44,000 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:57:44,005 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 15:57:44,006 INFO L341 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-04-18 15:57:44,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 228 flow [2022-04-18 15:57:44,045 INFO L129 PetriNetUnfolder]: 4/125 cut-off events. [2022-04-18 15:57:44,045 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:44,050 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 15:57:44,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 109 transitions, 228 flow [2022-04-18 15:57:44,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 108 transitions, 224 flow [2022-04-18 15:57:44,059 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2022-04-18 15:57:44,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:57:44,059 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,060 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 15:57:44,060 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 15:57:44,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,064 INFO L85 PathProgramCache]: Analyzing trace with hash 273919009, now seen corresponding path program 1 times [2022-04-18 15:57:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309547585] [2022-04-18 15:57:44,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:44,264 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 15:57:44,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:44,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309547585] [2022-04-18 15:57:44,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309547585] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:44,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:44,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54137399] [2022-04-18 15:57:44,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:44,274 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:44,295 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-04-18 15:57:44,299 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 15:57:44,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:44,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-04-18 15:57:44,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:44,380 INFO L129 PetriNetUnfolder]: 21/203 cut-off events. [2022-04-18 15:57:44,380 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 15:57:44,381 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 15:57:44,385 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 14 selfloop transitions, 2 changer transitions 1/103 dead transitions. [2022-04-18 15:57:44,385 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 246 flow [2022-04-18 15:57:44,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-04-18 15:57:44,404 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8685015290519877 [2022-04-18 15:57:44,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-04-18 15:57:44,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-04-18 15:57:44,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:44,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-04-18 15:57:44,412 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 15:57:44,417 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 15:57:44,418 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 15:57:44,419 INFO L186 Difference]: Start difference. First operand has 111 places, 108 transitions, 224 flow. Second operand 3 states and 284 transitions. [2022-04-18 15:57:44,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 246 flow [2022-04-18 15:57:44,423 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 15:57:44,425 INFO L242 Difference]: Finished difference. Result has 110 places, 102 transitions, 215 flow [2022-04-18 15:57:44,427 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 15:57:44,430 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -1 predicate places. [2022-04-18 15:57:44,430 INFO L478 AbstractCegarLoop]: Abstraction has has 110 places, 102 transitions, 215 flow [2022-04-18 15:57:44,430 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 15:57:44,431 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,431 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 15:57:44,431 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:57:44,431 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 15:57:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash 285929060, now seen corresponding path program 1 times [2022-04-18 15:57:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031261451] [2022-04-18 15:57:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:44,483 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 15:57:44,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:44,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031261451] [2022-04-18 15:57:44,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031261451] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:44,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:44,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:44,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909140998] [2022-04-18 15:57:44,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:44,485 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:44,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:44,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:44,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:44,486 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 109 [2022-04-18 15:57:44,487 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 15:57:44,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:44,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 109 [2022-04-18 15:57:44,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:44,554 INFO L129 PetriNetUnfolder]: 21/268 cut-off events. [2022-04-18 15:57:44,554 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:57:44,556 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 15:57:44,558 INFO L132 encePairwiseOnDemand]: 106/109 looper letters, 14 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-04-18 15:57:44,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 101 transitions, 245 flow [2022-04-18 15:57:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:44,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2022-04-18 15:57:44,562 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8593272171253823 [2022-04-18 15:57:44,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2022-04-18 15:57:44,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2022-04-18 15:57:44,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:44,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2022-04-18 15:57:44,567 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 15:57:44,569 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 15:57:44,570 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 15:57:44,571 INFO L186 Difference]: Start difference. First operand has 110 places, 102 transitions, 215 flow. Second operand 3 states and 281 transitions. [2022-04-18 15:57:44,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 101 transitions, 245 flow [2022-04-18 15:57:44,572 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 15:57:44,573 INFO L242 Difference]: Finished difference. Result has 108 places, 101 transitions, 213 flow [2022-04-18 15:57:44,574 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 15:57:44,575 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -3 predicate places. [2022-04-18 15:57:44,576 INFO L478 AbstractCegarLoop]: Abstraction has has 108 places, 101 transitions, 213 flow [2022-04-18 15:57:44,576 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 15:57:44,576 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,576 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 15:57:44,577 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:57:44,577 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 15:57:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1679986082, now seen corresponding path program 1 times [2022-04-18 15:57:44,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731684765] [2022-04-18 15:57:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:44,636 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 15:57:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:44,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731684765] [2022-04-18 15:57:44,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731684765] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:44,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:44,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211988756] [2022-04-18 15:57:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:44,639 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:44,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:44,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:44,642 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2022-04-18 15:57:44,642 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 15:57:44,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:44,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2022-04-18 15:57:44,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:44,679 INFO L129 PetriNetUnfolder]: 10/224 cut-off events. [2022-04-18 15:57:44,680 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:57:44,681 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 15:57:44,683 INFO L132 encePairwiseOnDemand]: 105/109 looper letters, 9 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2022-04-18 15:57:44,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 227 flow [2022-04-18 15:57:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:44,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-04-18 15:57:44,684 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8746177370030581 [2022-04-18 15:57:44,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-04-18 15:57:44,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-04-18 15:57:44,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:44,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-04-18 15:57:44,686 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 15:57:44,688 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 15:57:44,688 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 15:57:44,688 INFO L186 Difference]: Start difference. First operand has 108 places, 101 transitions, 213 flow. Second operand 3 states and 286 transitions. [2022-04-18 15:57:44,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 227 flow [2022-04-18 15:57:44,690 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 15:57:44,693 INFO L242 Difference]: Finished difference. Result has 105 places, 98 transitions, 205 flow [2022-04-18 15:57:44,694 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 15:57:44,695 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -6 predicate places. [2022-04-18 15:57:44,695 INFO L478 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 205 flow [2022-04-18 15:57:44,696 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 15:57:44,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,696 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 15:57:44,696 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:57:44,696 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 15:57:44,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,704 INFO L85 PathProgramCache]: Analyzing trace with hash -249237185, now seen corresponding path program 1 times [2022-04-18 15:57:44,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525262291] [2022-04-18 15:57:44,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:44,765 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 15:57:44,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:44,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525262291] [2022-04-18 15:57:44,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525262291] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:44,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:44,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:44,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975564548] [2022-04-18 15:57:44,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:44,767 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:44,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:44,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:44,769 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 109 [2022-04-18 15:57:44,770 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 15:57:44,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:44,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 109 [2022-04-18 15:57:44,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:44,816 INFO L129 PetriNetUnfolder]: 15/237 cut-off events. [2022-04-18 15:57:44,817 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 15:57:44,817 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 15:57:44,818 INFO L132 encePairwiseOnDemand]: 103/109 looper letters, 14 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2022-04-18 15:57:44,818 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 103 transitions, 254 flow [2022-04-18 15:57:44,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:44,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-04-18 15:57:44,820 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8960244648318043 [2022-04-18 15:57:44,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-04-18 15:57:44,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-04-18 15:57:44,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:44,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-04-18 15:57:44,821 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 15:57:44,822 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 15:57:44,824 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 15:57:44,825 INFO L186 Difference]: Start difference. First operand has 105 places, 98 transitions, 205 flow. Second operand 3 states and 293 transitions. [2022-04-18 15:57:44,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 103 transitions, 254 flow [2022-04-18 15:57:44,826 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 15:57:44,829 INFO L242 Difference]: Finished difference. Result has 107 places, 100 transitions, 232 flow [2022-04-18 15:57:44,830 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 15:57:44,830 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -4 predicate places. [2022-04-18 15:57:44,831 INFO L478 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 232 flow [2022-04-18 15:57:44,831 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 15:57:44,834 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,834 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 15:57:44,834 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:57:44,834 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 15:57:44,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1058002405, now seen corresponding path program 1 times [2022-04-18 15:57:44,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895637588] [2022-04-18 15:57:44,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:57:44,886 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 15:57:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:57:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895637588] [2022-04-18 15:57:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895637588] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:57:44,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:57:44,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:57:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960486294] [2022-04-18 15:57:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:57:44,887 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:57:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:57:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:57:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:57:44,888 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 109 [2022-04-18 15:57:44,889 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 15:57:44,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:57:44,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 109 [2022-04-18 15:57:44,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:57:44,941 INFO L129 PetriNetUnfolder]: 19/244 cut-off events. [2022-04-18 15:57:44,941 INFO L130 PetriNetUnfolder]: For 36/38 co-relation queries the response was YES. [2022-04-18 15:57:44,942 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 15:57:44,943 INFO L132 encePairwiseOnDemand]: 104/109 looper letters, 19 selfloop transitions, 4 changer transitions 0/106 dead transitions. [2022-04-18 15:57:44,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 302 flow [2022-04-18 15:57:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:57:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:57:44,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2022-04-18 15:57:44,944 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8776758409785933 [2022-04-18 15:57:44,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2022-04-18 15:57:44,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2022-04-18 15:57:44,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:57:44,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2022-04-18 15:57:44,946 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 15:57:44,946 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 15:57:44,947 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 15:57:44,947 INFO L186 Difference]: Start difference. First operand has 107 places, 100 transitions, 232 flow. Second operand 3 states and 287 transitions. [2022-04-18 15:57:44,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 302 flow [2022-04-18 15:57:44,949 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 15:57:44,950 INFO L242 Difference]: Finished difference. Result has 109 places, 103 transitions, 256 flow [2022-04-18 15:57:44,950 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 15:57:44,951 INFO L335 CegarLoopForPetriNet]: 111 programPoint places, -2 predicate places. [2022-04-18 15:57:44,951 INFO L478 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 256 flow [2022-04-18 15:57:44,951 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 15:57:44,952 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:57:44,952 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 15:57:44,952 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:57:44,952 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 15:57:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:57:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 224438131, now seen corresponding path program 1 times [2022-04-18 15:57:44,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:57:44,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999092406] [2022-04-18 15:57:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:57:44,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:57:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:44,982 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:57:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:57:45,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:57:45,043 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:57:45,044 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 14 remaining) [2022-04-18 15:57:45,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2022-04-18 15:57:45,045 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2022-04-18 15:57:45,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2022-04-18 15:57:45,047 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2022-04-18 15:57:45,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2022-04-18 15:57:45,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2022-04-18 15:57:45,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2022-04-18 15:57:45,048 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2022-04-18 15:57:45,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-04-18 15:57:45,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2022-04-18 15:57:45,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2022-04-18 15:57:45,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2022-04-18 15:57:45,049 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2022-04-18 15:57:45,049 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:57:45,055 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-04-18 15:57:45,059 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 15:57:45,060 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 15:57:45,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 03:57:45 BasicIcfg [2022-04-18 15:57:45,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 15:57:45,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 15:57:45,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 15:57:45,112 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 15:57:45,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:57:43" (3/4) ... [2022-04-18 15:57:45,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 15:57:45,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 15:57:45,114 INFO L158 Benchmark]: Toolchain (without parser) took 2000.70ms. Allocated memory is still 140.5MB. Free memory was 104.8MB in the beginning and 91.8MB in the end (delta: 13.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2022-04-18 15:57:45,114 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.93ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 106.2MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.76ms. Allocated memory is still 140.5MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: Boogie Preprocessor took 38.51ms. Allocated memory is still 140.5MB. Free memory was 104.1MB in the beginning and 102.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: RCFGBuilder took 301.32ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 89.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: TraceAbstraction took 1181.56ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 92.8MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:57:45,115 INFO L158 Benchmark]: Witness Printer took 2.06ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 15:57:45,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 88.1MB. Free memory was 61.1MB in the beginning and 61.1MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.93ms. Allocated memory is still 140.5MB. Free memory was 104.6MB in the beginning and 106.2MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.76ms. Allocated memory is still 140.5MB. Free memory was 106.2MB in the beginning and 104.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.51ms. Allocated memory is still 140.5MB. Free memory was 104.1MB in the beginning and 102.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 301.32ms. Allocated memory is still 140.5MB. Free memory was 102.7MB in the beginning and 89.9MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1181.56ms. Allocated memory is still 140.5MB. Free memory was 89.2MB in the beginning and 92.8MB in the end (delta: -3.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.06ms. Allocated memory is still 140.5MB. Free memory was 92.8MB in the beginning and 91.8MB in the end (delta: 1.0MB). 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: 0.0s, 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 15:57:45,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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