./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-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/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:47:16,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:47:16,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:47:16,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:47:16,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:47:16,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:47:16,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:47:16,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:47:16,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:47:16,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:47:16,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:47:16,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:47:16,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:47:16,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:47:16,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:47:16,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:47:16,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:47:16,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:47:16,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:47:16,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:47:16,639 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:47:16,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:47:16,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:47:16,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:47:16,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:47:16,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:47:16,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:47:16,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:47:16,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:47:16,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:47:16,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:47:16,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:47:16,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:47:16,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:47:16,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:47:16,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:47:16,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:47:16,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:47:16,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:47:16,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:47:16,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:47:16,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:47:16,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:47:16,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:47:16,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:47:16,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:47:16,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:47:16,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:47:16,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:47:16,688 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:47:16,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:47:16,688 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:47:16,689 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:47:16,691 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:47:16,691 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:47:16,691 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:47:16,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:47:16,692 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:47:16,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:47:16,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:47:16,693 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:47:16,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:47:16,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:16,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:47:16,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:47:16,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:47:16,696 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> abac4834eb8b1123405a2c6108c3d30e84ad22df2224a055d262e226b4ba66e1 [2022-04-18 18:47:16,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:47:17,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:47:17,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:47:17,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:47:17,016 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:47:17,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-04-18 18:47:17,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca0fe7c79/ef577cb9f761485f866d35b6aca92933/FLAGe0072d01e [2022-04-18 18:47:17,489 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:47:17,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/gcd-2.i [2022-04-18 18:47:17,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca0fe7c79/ef577cb9f761485f866d35b6aca92933/FLAGe0072d01e [2022-04-18 18:47:17,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca0fe7c79/ef577cb9f761485f866d35b6aca92933 [2022-04-18 18:47:17,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:47:17,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:47:17,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:17,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:47:17,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:47:17,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a522847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17, skipping insertion in model container [2022-04-18 18:47:17,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:47:17,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:47:17,655 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-atomic/gcd-2.i[938,951] [2022-04-18 18:47:17,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:17,760 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:47:17,770 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-atomic/gcd-2.i[938,951] [2022-04-18 18:47:17,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:17,836 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:47:17,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17 WrapperNode [2022-04-18 18:47:17,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:17,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:17,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:47:17,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:47:17,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,852 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,901 INFO L137 Inliner]: procedures = 174, calls = 30, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 174 [2022-04-18 18:47:17,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:17,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:47:17,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:47:17,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:47:17,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:47:17,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:47:17,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:47:17,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:47:17,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (1/1) ... [2022-04-18 18:47:17,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:17,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:47:17,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:47:17,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:47:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:47:17,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure dec_a [2022-04-18 18:47:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_a [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure dec_b [2022-04-18 18:47:17,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dec_b [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:47:17,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:47:17,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:47:17,997 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:47:18,132 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:47:18,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:47:18,350 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:47:18,400 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:47:18,400 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 18:47:18,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:18 BoogieIcfgContainer [2022-04-18 18:47:18,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:47:18,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:47:18,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:47:18,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:47:18,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:47:17" (1/3) ... [2022-04-18 18:47:18,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e07310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:18, skipping insertion in model container [2022-04-18 18:47:18,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:17" (2/3) ... [2022-04-18 18:47:18,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e07310f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:18, skipping insertion in model container [2022-04-18 18:47:18,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:18" (3/3) ... [2022-04-18 18:47:18,411 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd-2.i [2022-04-18 18:47:18,414 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:47:18,417 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:47:18,418 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-04-18 18:47:18,418 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:47:18,464 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 18:47:18,490 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:47:18,496 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=FINITE_AUTOMATA, 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 18:47:18,496 INFO L341 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-04-18 18:47:18,509 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:47:18,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 197 transitions, 410 flow [2022-04-18 18:47:18,526 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 197 transitions, 410 flow [2022-04-18 18:47:18,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 192 places, 197 transitions, 410 flow [2022-04-18 18:47:18,583 INFO L129 PetriNetUnfolder]: 12/195 cut-off events. [2022-04-18 18:47:18,583 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 18:47:18,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 12/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 104. Up to 2 conditions per place. [2022-04-18 18:47:18,590 INFO L116 LiptonReduction]: Number of co-enabled transitions 1836 [2022-04-18 18:47:24,006 INFO L131 LiptonReduction]: Checked pairs total: 7433 [2022-04-18 18:47:24,007 INFO L133 LiptonReduction]: Total number of compositions: 248 [2022-04-18 18:47:24,015 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 45 transitions, 106 flow [2022-04-18 18:47:24,062 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 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 18:47:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 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 18:47:24,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 18:47:24,070 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:47:24,070 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 18:47:24,070 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 18:47:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:47:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 867, now seen corresponding path program 1 times [2022-04-18 18:47:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:47:24,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188746668] [2022-04-18 18:47:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:47:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:47:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:47:24,165 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 18:47:24,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:47:24,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188746668] [2022-04-18 18:47:24,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188746668] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:47:24,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:47:24,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 18:47:24,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878721419] [2022-04-18 18:47:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:47:24,172 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:47:24,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:47:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:47:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:47:24,192 INFO L87 Difference]: Start difference. First operand has 619 states, 481 states have (on average 3.496881496881497) internal successors, (1682), 618 states have internal predecessors, (1682), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 18:47:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:47:24,236 INFO L93 Difference]: Finished difference Result 127 states and 299 transitions. [2022-04-18 18:47:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:47:24,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-04-18 18:47:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:47:24,246 INFO L225 Difference]: With dead ends: 127 [2022-04-18 18:47:24,246 INFO L226 Difference]: Without dead ends: 86 [2022-04-18 18:47:24,247 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:47:24,250 INFO L913 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:47:24,251 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:47:24,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-04-18 18:47:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-04-18 18:47:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.4235294117647057) internal successors, (206), 85 states have internal predecessors, (206), 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 18:47:24,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 206 transitions. [2022-04-18 18:47:24,286 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 206 transitions. Word has length 1 [2022-04-18 18:47:24,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:47:24,287 INFO L478 AbstractCegarLoop]: Abstraction has 86 states and 206 transitions. [2022-04-18 18:47:24,287 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 18:47:24,287 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 206 transitions. [2022-04-18 18:47:24,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:47:24,288 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:47:24,288 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-04-18 18:47:24,288 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:47:24,289 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 18:47:24,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:47:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash -244233646, now seen corresponding path program 1 times [2022-04-18 18:47:24,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:47:24,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959432988] [2022-04-18 18:47:24,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:47:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:47:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:47:24,395 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 18:47:24,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:47:24,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959432988] [2022-04-18 18:47:24,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959432988] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:47:24,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:47:24,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:47:24,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689778224] [2022-04-18 18:47:24,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:47:24,399 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:47:24,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:47:24,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:47:24,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:47:24,404 INFO L87 Difference]: Start difference. First operand 86 states and 206 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:47:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:47:24,440 INFO L93 Difference]: Finished difference Result 106 states and 249 transitions. [2022-04-18 18:47:24,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:47:24,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2022-04-18 18:47:24,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:47:24,444 INFO L225 Difference]: With dead ends: 106 [2022-04-18 18:47:24,444 INFO L226 Difference]: Without dead ends: 96 [2022-04-18 18:47:24,445 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:47:24,446 INFO L913 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 18:47:24,446 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 18:47:24,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-04-18 18:47:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-04-18 18:47:24,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 2.3466666666666667) internal successors, (176), 75 states have internal predecessors, (176), 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 18:47:24,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 176 transitions. [2022-04-18 18:47:24,460 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 176 transitions. Word has length 6 [2022-04-18 18:47:24,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:47:24,460 INFO L478 AbstractCegarLoop]: Abstraction has 76 states and 176 transitions. [2022-04-18 18:47:24,460 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:47:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 176 transitions. [2022-04-18 18:47:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-18 18:47:24,461 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:47:24,462 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 18:47:24,462 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:47:24,462 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting dec_aErr1ASSERT_VIOLATIONDATA_RACE === [dec_aErr0ASSERT_VIOLATIONDATA_RACE, dec_aErr1ASSERT_VIOLATIONDATA_RACE, dec_aErr2ASSERT_VIOLATIONDATA_RACE, dec_aErr3ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2022-04-18 18:47:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:47:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1020502236, now seen corresponding path program 1 times [2022-04-18 18:47:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:47:24,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062671105] [2022-04-18 18:47:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:47:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:47:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:47:24,532 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:47:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:47:24,573 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:47:24,574 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:47:24,574 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (34 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (33 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr1ASSERT_VIOLATIONDATA_RACE (32 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (31 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (30 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (29 of 35 remaining) [2022-04-18 18:47:24,576 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (28 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (27 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (26 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (25 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (24 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (23 of 35 remaining) [2022-04-18 18:47:24,577 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (22 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (21 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (20 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 35 remaining) [2022-04-18 18:47:24,578 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr0ASSERT_VIOLATIONDATA_RACE (12 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr2ASSERT_VIOLATIONDATA_RACE (11 of 35 remaining) [2022-04-18 18:47:24,579 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr3ASSERT_VIOLATIONDATA_RACE (10 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr4ASSERT_VIOLATIONDATA_RACE (9 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr5ASSERT_VIOLATIONDATA_RACE (8 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_aErr6ASSERT_VIOLATIONDATA_RACE (7 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr0ASSERT_VIOLATIONDATA_RACE (6 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr1ASSERT_VIOLATIONDATA_RACE (5 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr2ASSERT_VIOLATIONDATA_RACE (4 of 35 remaining) [2022-04-18 18:47:24,580 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr3ASSERT_VIOLATIONDATA_RACE (3 of 35 remaining) [2022-04-18 18:47:24,581 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr4ASSERT_VIOLATIONDATA_RACE (2 of 35 remaining) [2022-04-18 18:47:24,581 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr5ASSERT_VIOLATIONDATA_RACE (1 of 35 remaining) [2022-04-18 18:47:24,581 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location dec_bErr6ASSERT_VIOLATIONDATA_RACE (0 of 35 remaining) [2022-04-18 18:47:24,581 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 18:47:24,583 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 18:47:24,586 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 18:47:24,586 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 18:47:24,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 06:47:24 BasicIcfg [2022-04-18 18:47:24,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 18:47:24,607 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 18:47:24,607 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 18:47:24,607 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 18:47:24,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:18" (3/4) ... [2022-04-18 18:47:24,609 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-04-18 18:47:24,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 18:47:24,610 INFO L158 Benchmark]: Toolchain (without parser) took 7085.89ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 97.6MB in the beginning and 76.2MB in the end (delta: 21.5MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2022-04-18 18:47:24,610 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:47:24,610 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.97ms. Allocated memory is still 119.5MB. Free memory was 97.2MB in the beginning and 77.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-04-18 18:47:24,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.21ms. Allocated memory is still 119.5MB. Free memory was 77.5MB in the beginning and 96.2MB in the end (delta: -18.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-04-18 18:47:24,610 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:47:24,611 INFO L158 Benchmark]: RCFGBuilder took 477.65ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 71.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-04-18 18:47:24,611 INFO L158 Benchmark]: TraceAbstraction took 6203.14ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 71.0MB in the beginning and 76.2MB in the end (delta: -5.1MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-04-18 18:47:24,611 INFO L158 Benchmark]: Witness Printer took 2.43ms. Allocated memory is still 157.3MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 18:47:24,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 77.6MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.97ms. Allocated memory is still 119.5MB. Free memory was 97.2MB in the beginning and 77.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.21ms. Allocated memory is still 119.5MB. Free memory was 77.5MB in the beginning and 96.2MB in the end (delta: -18.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 119.5MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 477.65ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 71.1MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 6203.14ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 71.0MB in the beginning and 76.2MB in the end (delta: -5.1MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Witness Printer took 2.43ms. Allocated memory is still 157.3MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 192 PlacesBefore, 48 PlacesAfterwards, 197 TransitionsBefore, 45 TransitionsAfterwards, 1836 CoEnabledTransitionPairs, 8 FixpointIterations, 131 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 8 ConcurrentYvCompositions, 8 ChoiceCompositions, 248 TotalNumberOfCompositions, 7433 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4536, positive: 4328, positive conditional: 0, positive unconditional: 4328, negative: 208, negative conditional: 0, negative unconditional: 208, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1808, positive: 1780, positive conditional: 0, positive unconditional: 1780, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1808, positive: 1333, positive conditional: 0, positive unconditional: 1333, negative: 475, negative conditional: 0, negative unconditional: 475, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 475, positive: 447, positive conditional: 0, positive unconditional: 447, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 274, positive: 198, positive conditional: 0, positive unconditional: 198, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4536, positive: 2548, positive conditional: 0, positive unconditional: 2548, negative: 180, negative conditional: 0, negative unconditional: 180, unknown: 1808, unknown conditional: 0, unknown unconditional: 1808] , Statistics on independence cache: Total cache size (in pairs): 278, Positive cache size: 262, Positive conditional cache size: 0, Positive unconditional cache size: 262, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - 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: 709]: Data race detected Data race detected The following path leads to a data race: [L695] 0 unsigned a, b; [L747] 0 unsigned a_in=__VERIFIER_nondet_uint(); [L748] 0 unsigned b_in=__VERIFIER_nondet_uint(); [L749] CALL 0 assume_abort_if_not(a_in>0) [L15] COND FALSE 0 !(!cond) [L749] RET 0 assume_abort_if_not(a_in>0) [L750] CALL 0 assume_abort_if_not(b_in>0) [L15] COND FALSE 0 !(!cond) [L750] RET 0 assume_abort_if_not(b_in>0) [L751] CALL 0 start(a_in, b_in) [L726] 0 a=a_in [L727] 0 b=b_in [L728] 0 pthread_t t1, t2; [L729] FCALL, FORK 0 pthread_create(&t1, 0, dec_a, 0) VAL [\old(a_in)=4294967294, \old(b_in)=4294967295, a=-4294967298, a_in=4294967294, b=-8589934593, b_in=4294967295, pthread_create(&t1, 0, dec_a, 0)=-1, t1={5:0}, t2={3:0}] [L709] 1 a!=b VAL [a=-4294967298, arg={0:0}, arg={0:0}, b=-8589934593] [L730] FCALL, FORK 0 pthread_create(&t2, 0, dec_b, 0) VAL [\old(a_in)=4294967294, \old(b_in)=4294967295, a=-4294967298, a_in=4294967294, b=-8589934593, b_in=4294967295, pthread_create(&t2, 0, dec_b, 0)=0, t1={5:0}, t2={3:0}] [L718] 2 a!=b [L718] COND TRUE 2 a!=b VAL [a=-4294967298, arg={0:0}, arg={0:0}, b=-8589934593] [L720] CALL 2 __VERIFIER_atomic_dec_b() [L703] 2 b>a [L703] COND TRUE 2 b>a [L704] EXPR 2 b-a [L704] 2 b=b-a [L720] RET 2 __VERIFIER_atomic_dec_b() [L709] 1 a!=b VAL [a=-4294967298, arg={0:0}, arg={0:0}, b=-4294967295] Now there is a data race on ~b~0 between C: b=b-a [704] and C: a!=b [709] - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 704]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 729]: 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: 730]: 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, 222 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 15 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=619occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 18:47:24,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-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