./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51d8ca31d415aa9bad047f7335407d8083242ea3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:55:53,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:55:53,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:55:53,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:55:53,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:55:53,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:55:53,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:55:53,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:55:53,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:55:53,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:55:53,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:55:53,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:55:53,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:55:53,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:55:53,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:55:53,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:55:53,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:55:53,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:55:53,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:55:53,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:55:53,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:55:53,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:55:53,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:55:53,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:55:53,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:55:53,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:55:53,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:55:53,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:55:53,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:55:53,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:55:53,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:55:53,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:55:53,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:55:53,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:55:53,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:55:53,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:55:53,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:55:53,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:55:53,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:55:53,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:55:53,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:55:53,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 10:55:53,718 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:55:53,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:55:53,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 10:55:53,719 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 10:55:53,719 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 10:55:53,719 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 10:55:53,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 10:55:53,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 10:55:53,720 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 10:55:53,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:55:53,721 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:55:53,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:55:53,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:55:53,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:55:53,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:55:53,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:55:53,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:55:53,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 10:55:53,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:55:53,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:55:53,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:55:53,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 10:55:53,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan 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 ! call(__VERIFIER_error())) ) 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 -> 51d8ca31d415aa9bad047f7335407d8083242ea3 [2019-12-07 10:55:53,823 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:55:53,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:55:53,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:55:53,834 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:55:53,834 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:55:53,834 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2019-12-07 10:55:53,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/data/7bb7fc99b/e14cfa4dcefb457898e0fbac292e7176/FLAGf0c47f4d7 [2019-12-07 10:55:54,329 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:55:54,329 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/sv-benchmarks/c/pthread-wmm/safe015_tso.opt.i [2019-12-07 10:55:54,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/data/7bb7fc99b/e14cfa4dcefb457898e0fbac292e7176/FLAGf0c47f4d7 [2019-12-07 10:55:54,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/data/7bb7fc99b/e14cfa4dcefb457898e0fbac292e7176 [2019-12-07 10:55:54,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:55:54,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:55:54,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:55:54,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:55:54,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:55:54,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e8c8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54, skipping insertion in model container [2019-12-07 10:55:54,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:55:54,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:55:54,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:55:54,621 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:55:54,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:55:54,698 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:55:54,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54 WrapperNode [2019-12-07 10:55:54,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:55:54,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:55:54,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:55:54,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:55:54,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:55:54,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:55:54,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:55:54,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:55:54,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... [2019-12-07 10:55:54,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:55:54,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:55:54,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:55:54,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:55:54,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 10:55:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 10:55:54,791 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 10:55:54,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 10:55:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 10:55:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 10:55:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 10:55:54,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:55:54,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:55:54,794 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 10:55:54,974 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:55:54,974 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 10:55:54,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:55:54 BoogieIcfgContainer [2019-12-07 10:55:54,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:55:54,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:55:54,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:55:54,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:55:54,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:55:54" (1/3) ... [2019-12-07 10:55:54,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0a5f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:55:54, skipping insertion in model container [2019-12-07 10:55:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:55:54" (2/3) ... [2019-12-07 10:55:54,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0a5f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:55:54, skipping insertion in model container [2019-12-07 10:55:54,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:55:54" (3/3) ... [2019-12-07 10:55:54,979 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2019-12-07 10:55:54,985 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 10:55:54,985 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:55:54,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:55:54,990 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 10:55:55,007 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,008 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,009 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,010 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,010 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:55:55,022 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:55:55,034 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:55:55,034 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:55:55,034 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:55:55,034 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:55:55,034 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:55:55,034 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:55:55,035 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:55:55,035 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:55:55,043 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 10:55:55,044 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 10:55:55,070 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 10:55:55,070 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:55:55,075 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 10:55:55,076 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 10:55:55,086 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 10:55:55,086 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:55:55,087 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 10:55:55,088 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 10:55:55,089 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 10:55:56,039 WARN L192 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-12-07 10:55:56,050 INFO L206 etLargeBlockEncoding]: Checked pairs total: 504 [2019-12-07 10:55:56,051 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-07 10:55:56,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 10:55:56,061 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 10:55:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 10:55:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 10:55:56,068 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:55:56,068 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:55:56,069 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:55:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:55:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -411766657, now seen corresponding path program 1 times [2019-12-07 10:55:56,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:55:56,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690395416] [2019-12-07 10:55:56,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:55:56,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:55:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:55:56,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690395416] [2019-12-07 10:55:56,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:55:56,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 10:55:56,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334057448] [2019-12-07 10:55:56,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 10:55:56,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:55:56,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 10:55:56,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:55:56,284 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-07 10:55:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:55:56,307 INFO L93 Difference]: Finished difference Result 57 states and 102 transitions. [2019-12-07 10:55:56,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 10:55:56,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 10:55:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:55:56,315 INFO L225 Difference]: With dead ends: 57 [2019-12-07 10:55:56,315 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 10:55:56,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 10:55:56,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 10:55:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2019-12-07 10:55:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:55:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 54 transitions. [2019-12-07 10:55:56,340 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 54 transitions. Word has length 8 [2019-12-07 10:55:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:55:56,341 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 54 transitions. [2019-12-07 10:55:56,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 10:55:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 54 transitions. [2019-12-07 10:55:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 10:55:56,342 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:55:56,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:55:56,342 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:55:56,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:55:56,342 INFO L82 PathProgramCache]: Analyzing trace with hash 116613460, now seen corresponding path program 1 times [2019-12-07 10:55:56,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:55:56,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547087218] [2019-12-07 10:55:56,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:55:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:55:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:55:56,407 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547087218] [2019-12-07 10:55:56,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:55:56,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:55:56,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236440673] [2019-12-07 10:55:56,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:55:56,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:55:56,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:55:56,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:55:56,409 INFO L87 Difference]: Start difference. First operand 34 states and 54 transitions. Second operand 5 states. [2019-12-07 10:55:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:55:56,442 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2019-12-07 10:55:56,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 10:55:56,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 10:55:56,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:55:56,443 INFO L225 Difference]: With dead ends: 37 [2019-12-07 10:55:56,443 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 10:55:56,444 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 10:55:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 10:55:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 10:55:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 10:55:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-12-07 10:55:56,447 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 9 [2019-12-07 10:55:56,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:55:56,447 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-12-07 10:55:56,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:55:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-12-07 10:55:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:55:56,447 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:55:56,447 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:55:56,447 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:55:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:55:56,448 INFO L82 PathProgramCache]: Analyzing trace with hash 934712652, now seen corresponding path program 1 times [2019-12-07 10:55:56,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:55:56,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602455615] [2019-12-07 10:55:56,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:55:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:55:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:55:56,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602455615] [2019-12-07 10:55:56,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:55:56,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:55:56,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092121384] [2019-12-07 10:55:56,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:55:56,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:55:56,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:55:56,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:55:56,521 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 6 states. [2019-12-07 10:55:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:55:56,560 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2019-12-07 10:55:56,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:55:56,561 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 10:55:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:55:56,561 INFO L225 Difference]: With dead ends: 25 [2019-12-07 10:55:56,561 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 10:55:56,562 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 10:55:56,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 10:55:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 10:55:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 10:55:56,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-12-07 10:55:56,563 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-12-07 10:55:56,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:55:56,564 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-12-07 10:55:56,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:55:56,564 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-12-07 10:55:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:55:56,564 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:55:56,564 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:55:56,564 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:55:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:55:56,564 INFO L82 PathProgramCache]: Analyzing trace with hash -977833272, now seen corresponding path program 1 times [2019-12-07 10:55:56,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:55:56,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109711400] [2019-12-07 10:55:56,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:55:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:55:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:55:56,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109711400] [2019-12-07 10:55:56,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:55:56,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:55:56,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416563130] [2019-12-07 10:55:56,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:55:56,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:55:56,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:55:56,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:55:56,610 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2019-12-07 10:55:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:55:56,620 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-12-07 10:55:56,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:55:56,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 10:55:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:55:56,621 INFO L225 Difference]: With dead ends: 20 [2019-12-07 10:55:56,621 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 10:55:56,621 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:55:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 10:55:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 10:55:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 10:55:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 10:55:56,623 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 10:55:56,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:55:56,623 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 10:55:56,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:55:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 10:55:56,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:55:56,624 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:55:56,624 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:55:56,624 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:55:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:55:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash -462405218, now seen corresponding path program 2 times [2019-12-07 10:55:56,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 10:55:56,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617002168] [2019-12-07 10:55:56,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:55:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:55:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:55:56,678 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617002168] [2019-12-07 10:55:56,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:55:56,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:55:56,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732804368] [2019-12-07 10:55:56,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:55:56,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 10:55:56,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:55:56,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:55:56,679 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 10:55:56,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:55:56,687 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 10:55:56,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:55:56,688 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 10:55:56,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:55:56,688 INFO L225 Difference]: With dead ends: 11 [2019-12-07 10:55:56,688 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:55:56,688 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:55:56,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:55:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:55:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:55:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:55:56,689 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 10:55:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:55:56,689 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:55:56,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:55:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:55:56,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:55:56,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:55:56 BasicIcfg [2019-12-07 10:55:56,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:55:56,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:55:56,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:55:56,692 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:55:56,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:55:54" (3/4) ... [2019-12-07 10:55:56,694 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:55:56,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 10:55:56,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 10:55:56,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 10:55:56,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 10:55:56,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:55:56,702 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:55:56,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7aa1ec4a-04c9-4267-a307-c7e397372079/bin/utaipan/witness.graphml [2019-12-07 10:55:56,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:55:56,734 INFO L168 Benchmark]: Toolchain (without parser) took 2381.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -98.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 10:55:56,734 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:55:56,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 10:55:56,735 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:55:56,735 INFO L168 Benchmark]: Boogie Preprocessor took 17.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:55:56,736 INFO L168 Benchmark]: RCFGBuilder took 227.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2019-12-07 10:55:56,736 INFO L168 Benchmark]: TraceAbstraction took 1716.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:55:56,736 INFO L168 Benchmark]: Witness Printer took 40.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 10:55:56,739 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 963.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 227.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1716.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.0s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 246 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 504 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 55 SDslu, 31 SDs, 0 SdLazy, 46 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 2424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...