./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe010_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_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/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 97f345e2e2bd021c5d222270dc95c399e3809cd8 .................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:29:49,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:29:49,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:29:49,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:29:49,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:29:49,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:29:49,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:29:49,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:29:49,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:29:49,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:29:49,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:29:49,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:29:49,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:29:49,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:29:49,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:29:49,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:29:49,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:29:49,724 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:29:49,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:29:49,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:29:49,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:29:49,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:29:49,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:29:49,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:29:49,731 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:29:49,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:29:49,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:29:49,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:29:49,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:29:49,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:29:49,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:29:49,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:29:49,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:29:49,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:29:49,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:29:49,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:29:49,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:29:49,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:29:49,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:29:49,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:29:49,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:29:49,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 14:29:49,747 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:29:49,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:29:49,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:29:49,748 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:29:49,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:29:49,748 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:29:49,748 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:29:49,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:29:49,749 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:29:49,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:29:49,750 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:29:49,750 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:29:49,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:29:49,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:29:49,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:29:49,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:29:49,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:29:49,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:29:49,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:29:49,753 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_8f477152-e0dd-4e3a-87ea-10c74d42dc75/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 -> 97f345e2e2bd021c5d222270dc95c399e3809cd8 [2019-12-07 14:29:49,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:29:49,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:29:49,864 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:29:49,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:29:49,865 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:29:49,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2019-12-07 14:29:49,908 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/data/c527020fb/8ccdc217111143249a40ff576bbc5814/FLAG09610a767 [2019-12-07 14:29:50,377 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:29:50,378 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/sv-benchmarks/c/pthread-wmm/safe010_tso.opt.i [2019-12-07 14:29:50,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/data/c527020fb/8ccdc217111143249a40ff576bbc5814/FLAG09610a767 [2019-12-07 14:29:50,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/data/c527020fb/8ccdc217111143249a40ff576bbc5814 [2019-12-07 14:29:50,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:29:50,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:29:50,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:29:50,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:29:50,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:29:50,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:29:50" (1/1) ... [2019-12-07 14:29:50,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7066884f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:50, skipping insertion in model container [2019-12-07 14:29:50,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:29:50" (1/1) ... [2019-12-07 14:29:50,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:29:50,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:29:51,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:29:51,179 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:29:51,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:29:51,251 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:29:51,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51 WrapperNode [2019-12-07 14:29:51,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:29:51,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:29:51,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:29:51,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:29:51,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:29:51,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:29:51,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:29:51,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:29:51,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... [2019-12-07 14:29:51,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:29:51,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:29:51,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:29:51,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:29:51,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/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 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 14:29:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 14:29:51,336 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 14:29:51,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 14:29:51,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:29:51,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:29:51,338 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 14:29:51,488 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:29:51,488 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 14:29:51,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:29:51 BoogieIcfgContainer [2019-12-07 14:29:51,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:29:51,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:29:51,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:29:51,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:29:51,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:29:50" (1/3) ... [2019-12-07 14:29:51,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f358d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:29:51, skipping insertion in model container [2019-12-07 14:29:51,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:29:51" (2/3) ... [2019-12-07 14:29:51,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f358d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:29:51, skipping insertion in model container [2019-12-07 14:29:51,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:29:51" (3/3) ... [2019-12-07 14:29:51,497 INFO L109 eAbstractionObserver]: Analyzing ICFG safe010_tso.opt.i [2019-12-07 14:29:51,503 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 14:29:51,503 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:29:51,507 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 14:29:51,508 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,524 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,525 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:29:51,538 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 14:29:51,551 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:29:51,551 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:29:51,551 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:29:51,552 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:29:51,552 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:29:51,552 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:29:51,552 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:29:51,552 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:29:51,560 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 42 transitions [2019-12-07 14:29:51,561 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions [2019-12-07 14:29:51,584 INFO L134 PetriNetUnfolder]: 1/40 cut-off events. [2019-12-07 14:29:51,585 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:29:51,590 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 1/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/44 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-07 14:29:51,592 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions [2019-12-07 14:29:51,602 INFO L134 PetriNetUnfolder]: 1/40 cut-off events. [2019-12-07 14:29:51,603 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:29:51,603 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 1/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs. 6/44 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-07 14:29:51,604 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 234 [2019-12-07 14:29:51,605 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 14:29:52,234 INFO L206 etLargeBlockEncoding]: Checked pairs total: 248 [2019-12-07 14:29:52,234 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-12-07 14:29:52,236 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions [2019-12-07 14:29:52,242 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 22 states. [2019-12-07 14:29:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 14:29:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:29:52,247 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:29:52,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:29:52,248 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:29:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:29:52,251 INFO L82 PathProgramCache]: Analyzing trace with hash 520306608, now seen corresponding path program 1 times [2019-12-07 14:29:52,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:29:52,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822905006] [2019-12-07 14:29:52,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:29:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:29:52,395 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 14:29:52,395 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822905006] [2019-12-07 14:29:52,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:29:52,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 14:29:52,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329875689] [2019-12-07 14:29:52,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:29:52,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:29:52,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:29:52,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:29:52,410 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2019-12-07 14:29:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:29:52,428 INFO L93 Difference]: Finished difference Result 21 states and 33 transitions. [2019-12-07 14:29:52,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:29:52,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 14:29:52,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:29:52,435 INFO L225 Difference]: With dead ends: 21 [2019-12-07 14:29:52,436 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 14:29:52,437 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 14:29:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 14:29:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-07 14:29:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 14:29:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2019-12-07 14:29:52,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 6 [2019-12-07 14:29:52,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:29:52,459 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-12-07 14:29:52,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:29:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2019-12-07 14:29:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:29:52,460 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:29:52,460 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:29:52,460 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:29:52,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:29:52,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1050364638, now seen corresponding path program 1 times [2019-12-07 14:29:52,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:29:52,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715280263] [2019-12-07 14:29:52,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:29:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:29:52,538 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 14:29:52,539 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715280263] [2019-12-07 14:29:52,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:29:52,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:29:52,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173427801] [2019-12-07 14:29:52,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:29:52,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:29:52,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:29:52,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:29:52,541 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand 5 states. [2019-12-07 14:29:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:29:52,567 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2019-12-07 14:29:52,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 14:29:52,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-07 14:29:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:29:52,568 INFO L225 Difference]: With dead ends: 16 [2019-12-07 14:29:52,568 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 14:29:52,569 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:29:52,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 14:29:52,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 14:29:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 14:29:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-07 14:29:52,571 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2019-12-07 14:29:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:29:52,571 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-07 14:29:52,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:29:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-07 14:29:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:29:52,572 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:29:52,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:29:52,572 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:29:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:29:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1800373493, now seen corresponding path program 1 times [2019-12-07 14:29:52,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:29:52,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088790762] [2019-12-07 14:29:52,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:29:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:29:52,612 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 14:29:52,612 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088790762] [2019-12-07 14:29:52,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:29:52,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:29:52,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623478509] [2019-12-07 14:29:52,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:29:52,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:29:52,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:29:52,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:29:52,614 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2019-12-07 14:29:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:29:52,627 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-07 14:29:52,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:29:52,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 14:29:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:29:52,627 INFO L225 Difference]: With dead ends: 14 [2019-12-07 14:29:52,628 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 14:29:52,628 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:29:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 14:29:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 14:29:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 14:29:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-12-07 14:29:52,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-12-07 14:29:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:29:52,630 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-12-07 14:29:52,630 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:29:52,630 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-12-07 14:29:52,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 14:29:52,630 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:29:52,631 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:29:52,631 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:29:52,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:29:52,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1800517643, now seen corresponding path program 2 times [2019-12-07 14:29:52,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:29:52,631 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952136246] [2019-12-07 14:29:52,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:29:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:29:52,674 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 14:29:52,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952136246] [2019-12-07 14:29:52,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:29:52,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:29:52,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903216208] [2019-12-07 14:29:52,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:29:52,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:29:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:29:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:29:52,676 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-12-07 14:29:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:29:52,681 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-12-07 14:29:52,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:29:52,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 14:29:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:29:52,682 INFO L225 Difference]: With dead ends: 10 [2019-12-07 14:29:52,682 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:29:52,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:29:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:29:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:29:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:29:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:29:52,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-07 14:29:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:29:52,683 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:29:52,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:29:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:29:52,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:29:52,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:29:52 BasicIcfg [2019-12-07 14:29:52,687 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:29:52,687 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:29:52,687 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:29:52,687 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:29:52,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:29:51" (3/4) ... [2019-12-07 14:29:52,691 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:29:52,696 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 14:29:52,696 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 14:29:52,699 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 14:29:52,699 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 14:29:52,699 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:29:52,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f477152-e0dd-4e3a-87ea-10c74d42dc75/bin/utaipan/witness.graphml [2019-12-07 14:29:52,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:29:52,729 INFO L168 Benchmark]: Toolchain (without parser) took 1836.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 936.2 MB in the beginning and 847.3 MB in the end (delta: 88.9 MB). Peak memory consumption was 183.8 MB. Max. memory is 11.5 GB. [2019-12-07 14:29:52,729 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:29:52,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -128.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:29:52,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:29:52,730 INFO L168 Benchmark]: Boogie Preprocessor took 15.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:29:52,731 INFO L168 Benchmark]: RCFGBuilder took 194.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:29:52,731 INFO L168 Benchmark]: TraceAbstraction took 1195.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 852.6 MB in the end (delta: 184.3 MB). Peak memory consumption was 184.3 MB. Max. memory is 11.5 GB. [2019-12-07 14:29:52,731 INFO L168 Benchmark]: Witness Printer took 40.17 ms. Allocated memory is still 1.1 GB. Free memory was 852.6 MB in the beginning and 847.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:29:52,733 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 957.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.18 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 936.2 MB in the beginning and 1.1 GB in the end (delta: -128.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.92 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.50 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1195.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 852.6 MB in the end (delta: 184.3 MB). Peak memory consumption was 184.3 MB. Max. memory is 11.5 GB. * Witness Printer took 40.17 ms. Allocated memory is still 1.1 GB. Free memory was 852.6 MB in the beginning and 847.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.6s, 48 ProgramPointsBefore, 15 ProgramPointsAfterwards, 42 TransitionsBefore, 11 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 120 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 248 CheckedPairsTotal, 37 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 3 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 14 SDslu, 13 SDs, 0 SdLazy, 23 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 569 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...