./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/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 5fcaf98e9698415fefa37f25d310a7a516d84123 ............................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:42:46,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:42:46,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:42:46,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:42:46,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:42:46,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:42:46,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:42:46,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:42:46,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:42:46,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:42:46,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:42:46,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:42:46,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:42:46,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:42:46,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:42:46,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:42:46,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:42:46,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:42:46,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:42:46,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:42:46,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:42:46,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:42:46,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:42:46,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:42:46,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:42:46,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:42:46,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:42:46,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:42:46,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:42:46,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:42:46,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:42:46,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:42:46,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:42:46,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:42:46,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:42:46,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:42:46,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:42:46,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:42:46,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:42:46,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:42:46,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:42:46,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:42:46,594 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:42:46,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:42:46,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:42:46,595 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:42:46,595 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:42:46,595 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:42:46,596 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:42:46,597 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:42:46,597 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:42:46,597 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:42:46,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:42:46,598 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:42:46,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:42:46,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:42:46,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:42:46,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:42:46,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:42:46,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:42:46,600 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:42:46,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:42:46,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:42:46,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:42:46,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:42:46,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:42:46,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:42:46,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:42:46,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:42:46,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:42:46,602 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:42:46,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:42:46,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:42:46,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:42:46,603 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_ece00577-d095-47c5-ab94-2cd39f8582d0/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 -> 5fcaf98e9698415fefa37f25d310a7a516d84123 [2019-11-26 02:42:46,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:42:46,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:42:46,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:42:46,794 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:42:46,795 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:42:46,795 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-26 02:42:46,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/data/e4505a6d6/409f7b7437de4b4db80f034df862b03a/FLAG98e9f17f0 [2019-11-26 02:42:47,191 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:42:47,192 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-26 02:42:47,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/data/e4505a6d6/409f7b7437de4b4db80f034df862b03a/FLAG98e9f17f0 [2019-11-26 02:42:47,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/data/e4505a6d6/409f7b7437de4b4db80f034df862b03a [2019-11-26 02:42:47,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:42:47,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:42:47,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:47,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:42:47,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:42:47,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60777a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47, skipping insertion in model container [2019-11-26 02:42:47,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:42:47,630 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:42:47,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:47,780 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:42:47,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:42:47,868 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:42:47,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47 WrapperNode [2019-11-26 02:42:47,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:42:47,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:47,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:42:47,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:42:47,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:42:47,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:42:47,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:42:47,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:42:47,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... [2019-11-26 02:42:47,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:42:47,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:42:47,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:42:47,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:42:47,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/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 [2019-11-26 02:42:47,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:42:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:42:47,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:42:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-26 02:42:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:42:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:42:48,188 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:42:48,188 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:42:48,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:48 BoogieIcfgContainer [2019-11-26 02:42:48,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:42:48,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:42:48,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:42:48,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:42:48,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:42:47" (1/3) ... [2019-11-26 02:42:48,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c8a2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:48, skipping insertion in model container [2019-11-26 02:42:48,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:42:47" (2/3) ... [2019-11-26 02:42:48,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c8a2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:42:48, skipping insertion in model container [2019-11-26 02:42:48,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:48" (3/3) ... [2019-11-26 02:42:48,195 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2019-11-26 02:42:48,204 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:42:48,210 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-26 02:42:48,231 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-26 02:42:48,253 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:42:48,254 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:42:48,254 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:42:48,254 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:42:48,254 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:42:48,254 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:42:48,254 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:42:48,254 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:42:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-26 02:42:48,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-26 02:42:48,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:48,296 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-26 02:42:48,297 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:48,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:48,303 INFO L82 PathProgramCache]: Analyzing trace with hash 61666, now seen corresponding path program 1 times [2019-11-26 02:42:48,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:48,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766307904] [2019-11-26 02:42:48,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:42:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:42:48,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766307904] [2019-11-26 02:42:48,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:42:48,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:42:48,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960964286] [2019-11-26 02:42:48,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:42:48,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:42:48,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:42:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:42:48,451 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2019-11-26 02:42:48,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:42:48,476 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-11-26 02:42:48,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:42:48,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-26 02:42:48,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:42:48,485 INFO L225 Difference]: With dead ends: 16 [2019-11-26 02:42:48,485 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:42:48,488 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 [2019-11-26 02:42:48,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:42:48,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:42:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:42:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-11-26 02:42:48,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2019-11-26 02:42:48,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:42:48,511 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-11-26 02:42:48,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:42:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-11-26 02:42:48,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:42:48,512 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:42:48,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:42:48,512 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:42:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:42:48,513 INFO L82 PathProgramCache]: Analyzing trace with hash 59467258, now seen corresponding path program 1 times [2019-11-26 02:42:48,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:42:48,513 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862931617] [2019-11-26 02:42:48,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:42:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:42:48,554 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:42:48,555 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:42:48,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:42:48 BoogieIcfgContainer [2019-11-26 02:42:48,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:42:48,575 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:42:48,575 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:42:48,575 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:42:48,575 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:42:48" (3/4) ... [2019-11-26 02:42:48,577 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:42:48,607 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ece00577-d095-47c5-ab94-2cd39f8582d0/bin/utaipan/witness.graphml [2019-11-26 02:42:48,607 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:42:48,609 INFO L168 Benchmark]: Toolchain (without parser) took 1006.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -139.4 MB). Peak memory consumption was 602.2 kB. Max. memory is 11.5 GB. [2019-11-26 02:42:48,610 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:42:48,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:48,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.36 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. [2019-11-26 02:42:48,611 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 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. [2019-11-26 02:42:48,612 INFO L168 Benchmark]: RCFGBuilder took 273.18 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:48,612 INFO L168 Benchmark]: TraceAbstraction took 384.31 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:48,613 INFO L168 Benchmark]: Witness Printer took 32.85 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:42:48,616 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 263.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.36 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 15.88 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 273.18 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 384.31 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 32.85 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: 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: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L33] struct mutex m; [L34] m.is_locked = 0 [L21] EXPR a->is_locked [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L21] EXPR a->is_locked [L21] COND TRUE a->is_locked == 1 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 2 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...