./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c --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/weaver/popl20-nonblocking-cntr-alt.wvr.c -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 dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 20:22:11,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 20:22:11,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 20:22:11,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 20:22:11,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 20:22:11,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 20:22:11,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 20:22:11,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 20:22:11,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 20:22:11,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 20:22:11,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 20:22:11,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 20:22:11,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 20:22:11,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 20:22:11,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 20:22:11,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 20:22:11,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 20:22:11,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 20:22:11,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 20:22:11,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 20:22:11,616 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 20:22:11,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 20:22:11,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 20:22:11,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 20:22:11,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 20:22:11,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 20:22:11,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 20:22:11,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 20:22:11,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 20:22:11,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 20:22:11,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 20:22:11,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 20:22:11,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 20:22:11,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 20:22:11,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 20:22:11,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 20:22:11,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 20:22:11,628 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 20:22:11,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 20:22:11,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 20:22:11,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 20:22:11,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 20:22:11,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 20:22:11,647 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 20:22:11,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 20:22:11,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 20:22:11,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 20:22:11,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 20:22:11,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 20:22:11,649 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 20:22:11,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 20:22:11,650 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 20:22:11,650 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 20:22:11,650 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 20:22:11,650 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 20:22:11,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 20:22:11,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 20:22:11,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 20:22:11,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 20:22:11,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:22:11,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 20:22:11,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 20:22:11,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 20:22:11,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 20:22:11,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 20:22:11,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f [2022-04-18 20:22:11,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 20:22:11,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 20:22:11,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 20:22:11,862 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 20:22:11,862 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 20:22:11,863 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-04-18 20:22:11,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d143dae/1cef2b4bf5cd49dd98b0452d9271023b/FLAG13b78f327 [2022-04-18 20:22:12,261 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 20:22:12,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-04-18 20:22:12,266 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d143dae/1cef2b4bf5cd49dd98b0452d9271023b/FLAG13b78f327 [2022-04-18 20:22:12,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/10d143dae/1cef2b4bf5cd49dd98b0452d9271023b [2022-04-18 20:22:12,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 20:22:12,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 20:22:12,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 20:22:12,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 20:22:12,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 20:22:12,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0fbcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12, skipping insertion in model container [2022-04-18 20:22:12,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 20:22:12,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 20:22:12,501 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-04-18 20:22:12,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:22:12,510 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 20:22:12,525 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-04-18 20:22:12,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 20:22:12,535 INFO L208 MainTranslator]: Completed translation [2022-04-18 20:22:12,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12 WrapperNode [2022-04-18 20:22:12,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 20:22:12,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 20:22:12,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 20:22:12,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 20:22:12,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,568 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2022-04-18 20:22:12,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 20:22:12,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 20:22:12,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 20:22:12,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 20:22:12,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 20:22:12,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 20:22:12,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 20:22:12,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 20:22:12,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (1/1) ... [2022-04-18 20:22:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 20:22:12,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 20:22:12,614 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 20:22:12,620 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 20:22:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 20:22:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 20:22:12,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 20:22:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 20:22:12,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 20:22:12,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 20:22:12,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 20:22:12,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 20:22:12,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 20:22:12,645 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 20:22:12,694 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 20:22:12,696 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 20:22:12,930 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 20:22:12,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 20:22:12,964 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-18 20:22:12,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:22:12 BoogieIcfgContainer [2022-04-18 20:22:12,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 20:22:12,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 20:22:12,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 20:22:12,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 20:22:12,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 08:22:12" (1/3) ... [2022-04-18 20:22:12,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e9cfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:22:12, skipping insertion in model container [2022-04-18 20:22:12,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 08:22:12" (2/3) ... [2022-04-18 20:22:12,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e9cfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 08:22:12, skipping insertion in model container [2022-04-18 20:22:12,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:22:12" (3/3) ... [2022-04-18 20:22:12,971 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-04-18 20:22:12,975 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 20:22:12,975 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 20:22:12,975 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-04-18 20:22:12,977 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 20:22:13,020 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 20:22:13,077 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 20:22:13,083 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 20:22:13,084 INFO L341 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-04-18 20:22:13,098 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 20:22:13,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 138 transitions, 292 flow [2022-04-18 20:22:13,116 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 138 transitions, 292 flow [2022-04-18 20:22:13,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 138 places, 138 transitions, 292 flow [2022-04-18 20:22:13,169 INFO L129 PetriNetUnfolder]: 7/136 cut-off events. [2022-04-18 20:22:13,170 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 20:22:13,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 136 events. 7/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 98 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2022-04-18 20:22:13,176 INFO L116 LiptonReduction]: Number of co-enabled transitions 1308 [2022-04-18 20:22:16,512 INFO L131 LiptonReduction]: Checked pairs total: 1576 [2022-04-18 20:22:16,512 INFO L133 LiptonReduction]: Total number of compositions: 158 [2022-04-18 20:22:16,519 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 33 transitions, 82 flow [2022-04-18 20:22:16,538 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 169 states, 118 states have (on average 3.4915254237288136) internal successors, (412), 168 states have internal predecessors, (412), 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 20:22:16,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 118 states have (on average 3.4915254237288136) internal successors, (412), 168 states have internal predecessors, (412), 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 20:22:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 20:22:16,543 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 20:22:16,543 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 20:22:16,544 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2022-04-18 20:22:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 20:22:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash 582, now seen corresponding path program 1 times [2022-04-18 20:22:16,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 20:22:16,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9458499] [2022-04-18 20:22:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 20:22:16,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 20:22:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 20:22:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 20:22:16,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 20:22:16,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9458499] [2022-04-18 20:22:16,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9458499] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 20:22:16,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 20:22:16,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 20:22:16,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904963026] [2022-04-18 20:22:16,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 20:22:16,619 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 20:22:16,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 20:22:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 20:22:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 20:22:16,638 INFO L87 Difference]: Start difference. First operand has 169 states, 118 states have (on average 3.4915254237288136) internal successors, (412), 168 states have internal predecessors, (412), 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 20:22:16,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 20:22:16,666 INFO L93 Difference]: Finished difference Result 33 states and 72 transitions. [2022-04-18 20:22:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 20:22:16,668 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 20:22:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 20:22:16,672 INFO L225 Difference]: With dead ends: 33 [2022-04-18 20:22:16,672 INFO L226 Difference]: Without dead ends: 0 [2022-04-18 20:22:16,673 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 20:22:16,675 INFO L913 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-18 20:22:16,676 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-18 20:22:16,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-18 20:22:16,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-18 20:22:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 20:22:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-18 20:22:16,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1 [2022-04-18 20:22:16,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 20:22:16,693 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-18 20:22:16,693 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 20:22:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-18 20:22:16,694 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-18 20:22:16,695 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (24 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2022-04-18 20:22:16,696 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2022-04-18 20:22:16,697 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2022-04-18 20:22:16,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2022-04-18 20:22:16,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2022-04-18 20:22:16,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2022-04-18 20:22:16,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2022-04-18 20:22:16,698 INFO L788 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 25 remaining) [2022-04-18 20:22:16,699 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2022-04-18 20:22:16,699 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2022-04-18 20:22:16,699 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2022-04-18 20:22:16,703 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2022-04-18 20:22:16,704 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2022-04-18 20:22:16,704 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2022-04-18 20:22:16,704 INFO L788 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2022-04-18 20:22:16,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 20:22:16,706 INFO L719 BasicCegarLoop]: Path program histogram: [1] [2022-04-18 20:22:16,710 INFO L227 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-04-18 20:22:16,711 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-18 20:22:16,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 08:22:16 BasicIcfg [2022-04-18 20:22:16,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-18 20:22:16,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-04-18 20:22:16,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-04-18 20:22:16,719 INFO L275 PluginConnector]: Witness Printer initialized [2022-04-18 20:22:16,720 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 08:22:12" (3/4) ... [2022-04-18 20:22:16,721 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-04-18 20:22:16,724 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-04-18 20:22:16,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-04-18 20:22:16,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-04-18 20:22:16,729 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-04-18 20:22:16,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-04-18 20:22:16,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-04-18 20:22:16,764 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2022-04-18 20:22:16,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-04-18 20:22:16,765 INFO L158 Benchmark]: Toolchain (without parser) took 4483.67ms. Allocated memory was 86.0MB in the beginning and 151.0MB in the end (delta: 65.0MB). Free memory was 44.1MB in the beginning and 80.8MB in the end (delta: -36.7MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2022-04-18 20:22:16,766 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 20:22:16,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.11ms. Allocated memory is still 119.5MB. Free memory was 99.9MB in the beginning and 88.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-04-18 20:22:16,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 119.5MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 20:22:16,766 INFO L158 Benchmark]: Boogie Preprocessor took 17.68ms. Allocated memory is still 119.5MB. Free memory was 87.2MB in the beginning and 85.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-04-18 20:22:16,767 INFO L158 Benchmark]: RCFGBuilder took 378.40ms. Allocated memory is still 119.5MB. Free memory was 85.9MB in the beginning and 68.7MB in the end (delta: 17.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-04-18 20:22:16,767 INFO L158 Benchmark]: TraceAbstraction took 3749.74ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 68.0MB in the beginning and 84.0MB in the end (delta: -16.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-04-18 20:22:16,767 INFO L158 Benchmark]: Witness Printer took 46.06ms. Allocated memory is still 151.0MB. Free memory was 84.0MB in the beginning and 80.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-04-18 20:22:16,769 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 86.0MB. Free memory is still 60.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.11ms. Allocated memory is still 119.5MB. Free memory was 99.9MB in the beginning and 88.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 119.5MB. Free memory was 88.9MB in the beginning and 87.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.68ms. Allocated memory is still 119.5MB. Free memory was 87.2MB in the beginning and 85.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.40ms. Allocated memory is still 119.5MB. Free memory was 85.9MB in the beginning and 68.7MB in the end (delta: 17.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3749.74ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 68.0MB in the beginning and 84.0MB in the end (delta: -16.0MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 46.06ms. Allocated memory is still 151.0MB. Free memory was 84.0MB in the beginning and 80.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 138 PlacesBefore, 38 PlacesAfterwards, 138 TransitionsBefore, 33 TransitionsAfterwards, 1308 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 158 TotalNumberOfCompositions, 1576 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1571, positive: 1570, positive conditional: 0, positive unconditional: 1570, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 846, positive: 845, positive conditional: 0, positive unconditional: 845, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 846, positive: 845, positive conditional: 0, positive unconditional: 845, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1571, positive: 725, positive conditional: 0, positive unconditional: 725, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 846, unknown conditional: 0, unknown unconditional: 846] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 48, Positive conditional cache size: 0, Positive unconditional cache size: 48, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 - PositiveResult [Line: 41]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 43]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 54]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 55]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 67]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 69]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 74]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 75]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 77]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 160 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-04-18 20:22:16,795 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 Result: TRUE