./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/lazy01_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/lazy01_false-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/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 61886a16eaa9879254fb15413029565914aacace .................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-08 18:03:18,614 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 18:03:18,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 18:03:18,621 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 18:03:18,622 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 18:03:18,622 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 18:03:18,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 18:03:18,624 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 18:03:18,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 18:03:18,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 18:03:18,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 18:03:18,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 18:03:18,626 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 18:03:18,627 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 18:03:18,627 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 18:03:18,628 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 18:03:18,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 18:03:18,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 18:03:18,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 18:03:18,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 18:03:18,631 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 18:03:18,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 18:03:18,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 18:03:18,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 18:03:18,633 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 18:03:18,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 18:03:18,634 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 18:03:18,635 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 18:03:18,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 18:03:18,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 18:03:18,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 18:03:18,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 18:03:18,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 18:03:18,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 18:03:18,637 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 18:03:18,637 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 18:03:18,638 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 18:03:18,645 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 18:03:18,645 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 18:03:18,646 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 18:03:18,646 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 18:03:18,646 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 18:03:18,646 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 18:03:18,646 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 18:03:18,647 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 18:03:18,647 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 18:03:18,648 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 18:03:18,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 18:03:18,649 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 18:03:18,649 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 18:03:18,650 INFO L133 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/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/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 -> 61886a16eaa9879254fb15413029565914aacace [2018-12-08 18:03:18,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 18:03:18,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 18:03:18,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 18:03:18,677 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 18:03:18,677 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 18:03:18,677 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/../../sv-benchmarks/c/pthread/lazy01_false-unreach-call.i [2018-12-08 18:03:18,714 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/data/d2acc4955/e0fe709cf9ce472fb58fc28642e45852/FLAG376f7ee4e [2018-12-08 18:03:19,063 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 18:03:19,063 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/sv-benchmarks/c/pthread/lazy01_false-unreach-call.i [2018-12-08 18:03:19,071 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/data/d2acc4955/e0fe709cf9ce472fb58fc28642e45852/FLAG376f7ee4e [2018-12-08 18:03:19,080 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/data/d2acc4955/e0fe709cf9ce472fb58fc28642e45852 [2018-12-08 18:03:19,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 18:03:19,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 18:03:19,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 18:03:19,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 18:03:19,085 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 18:03:19,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@402e4aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19, skipping insertion in model container [2018-12-08 18:03:19,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 18:03:19,112 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 18:03:19,269 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:03:19,279 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 18:03:19,345 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 18:03:19,377 INFO L195 MainTranslator]: Completed translation [2018-12-08 18:03:19,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19 WrapperNode [2018-12-08 18:03:19,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 18:03:19,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 18:03:19,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 18:03:19,378 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 18:03:19,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 18:03:19,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 18:03:19,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 18:03:19,408 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 18:03:19,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... [2018-12-08 18:03:19,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 18:03:19,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 18:03:19,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 18:03:19,426 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 18:03:19,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/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 [2018-12-08 18:03:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 18:03:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 18:03:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2018-12-08 18:03:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2018-12-08 18:03:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2018-12-08 18:03:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2018-12-08 18:03:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 18:03:19,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 18:03:19,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 18:03:19,462 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-08 18:03:19,662 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 18:03:19,662 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 18:03:19,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:03:19 BoogieIcfgContainer [2018-12-08 18:03:19,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 18:03:19,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 18:03:19,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 18:03:19,666 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 18:03:19,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 06:03:19" (1/3) ... [2018-12-08 18:03:19,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318a720b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:03:19, skipping insertion in model container [2018-12-08 18:03:19,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 06:03:19" (2/3) ... [2018-12-08 18:03:19,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318a720b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 06:03:19, skipping insertion in model container [2018-12-08 18:03:19,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:03:19" (3/3) ... [2018-12-08 18:03:19,669 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01_false-unreach-call.i [2018-12-08 18:03:19,691 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe Thread0_thread1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe Thread0_thread1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#t~nondet0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,692 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thread1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe Thread1_thread2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe Thread1_thread2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,693 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thread2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe Thread2_thread3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe Thread2_thread3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,694 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,695 WARN L317 ript$VariableManager]: TermVariabe |Thread2_thread3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 18:03:19,707 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-08 18:03:19,707 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 18:03:19,712 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-12-08 18:03:19,721 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-12-08 18:03:19,735 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 18:03:19,736 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 18:03:19,736 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 18:03:19,736 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 18:03:19,736 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 18:03:19,736 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 18:03:19,736 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 18:03:19,736 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 18:03:19,741 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71places, 74 transitions [2018-12-08 18:03:19,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3562 states. [2018-12-08 18:03:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states. [2018-12-08 18:03:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-08 18:03:19,836 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:03:19,837 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:03:19,839 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:03:19,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:03:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -394378403, now seen corresponding path program 1 times [2018-12-08 18:03:19,846 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:03:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:19,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:03:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:19,888 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:03:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:03:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:03:19,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:03:19,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:03:19,976 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:03:19,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:03:19,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:03:19,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:03:19,989 INFO L87 Difference]: Start difference. First operand 3562 states. Second operand 3 states. [2018-12-08 18:03:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:03:20,038 INFO L93 Difference]: Finished difference Result 3442 states and 10692 transitions. [2018-12-08 18:03:20,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:03:20,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-12-08 18:03:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:03:20,056 INFO L225 Difference]: With dead ends: 3442 [2018-12-08 18:03:20,056 INFO L226 Difference]: Without dead ends: 1949 [2018-12-08 18:03:20,057 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:03:20,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2018-12-08 18:03:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1949. [2018-12-08 18:03:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1949 states. [2018-12-08 18:03:20,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1949 states to 1949 states and 5937 transitions. [2018-12-08 18:03:20,138 INFO L78 Accepts]: Start accepts. Automaton has 1949 states and 5937 transitions. Word has length 28 [2018-12-08 18:03:20,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:03:20,139 INFO L480 AbstractCegarLoop]: Abstraction has 1949 states and 5937 transitions. [2018-12-08 18:03:20,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:03:20,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1949 states and 5937 transitions. [2018-12-08 18:03:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 18:03:20,142 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:03:20,142 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:03:20,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:03:20,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:03:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash -160878369, now seen corresponding path program 1 times [2018-12-08 18:03:20,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:03:20,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:03:20,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,146 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:03:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:03:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:03:20,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:03:20,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 18:03:20,197 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:03:20,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 18:03:20,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 18:03:20,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:03:20,198 INFO L87 Difference]: Start difference. First operand 1949 states and 5937 transitions. Second operand 3 states. [2018-12-08 18:03:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:03:20,227 INFO L93 Difference]: Finished difference Result 1154 states and 3065 transitions. [2018-12-08 18:03:20,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 18:03:20,227 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-12-08 18:03:20,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:03:20,232 INFO L225 Difference]: With dead ends: 1154 [2018-12-08 18:03:20,232 INFO L226 Difference]: Without dead ends: 1130 [2018-12-08 18:03:20,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 18:03:20,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1130 states. [2018-12-08 18:03:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1130 to 1130. [2018-12-08 18:03:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2018-12-08 18:03:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 3001 transitions. [2018-12-08 18:03:20,253 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 3001 transitions. Word has length 32 [2018-12-08 18:03:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:03:20,254 INFO L480 AbstractCegarLoop]: Abstraction has 1130 states and 3001 transitions. [2018-12-08 18:03:20,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 18:03:20,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 3001 transitions. [2018-12-08 18:03:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 18:03:20,255 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:03:20,255 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:03:20,255 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:03:20,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:03:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash -779103767, now seen corresponding path program 1 times [2018-12-08 18:03:20,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:03:20,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:03:20,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,259 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:03:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:03:20,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:03:20,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:03:20,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 18:03:20,301 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:03:20,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 18:03:20,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 18:03:20,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 18:03:20,302 INFO L87 Difference]: Start difference. First operand 1130 states and 3001 transitions. Second operand 4 states. [2018-12-08 18:03:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:03:20,320 INFO L93 Difference]: Finished difference Result 1082 states and 2869 transitions. [2018-12-08 18:03:20,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 18:03:20,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-08 18:03:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:03:20,324 INFO L225 Difference]: With dead ends: 1082 [2018-12-08 18:03:20,324 INFO L226 Difference]: Without dead ends: 1034 [2018-12-08 18:03:20,325 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 18:03:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2018-12-08 18:03:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2018-12-08 18:03:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-12-08 18:03:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 2737 transitions. [2018-12-08 18:03:20,348 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 2737 transitions. Word has length 33 [2018-12-08 18:03:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:03:20,348 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 2737 transitions. [2018-12-08 18:03:20,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 18:03:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 2737 transitions. [2018-12-08 18:03:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-08 18:03:20,349 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:03:20,349 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:03:20,349 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:03:20,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:03:20,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1031685749, now seen corresponding path program 1 times [2018-12-08 18:03:20,350 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:03:20,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:03:20,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,352 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:03:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 18:03:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 18:03:20,394 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 18:03:20,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 18:03:20,394 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 18:03:20,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 18:03:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 18:03:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 18:03:20,395 INFO L87 Difference]: Start difference. First operand 1034 states and 2737 transitions. Second operand 5 states. [2018-12-08 18:03:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 18:03:20,431 INFO L93 Difference]: Finished difference Result 986 states and 2605 transitions. [2018-12-08 18:03:20,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 18:03:20,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-08 18:03:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 18:03:20,435 INFO L225 Difference]: With dead ends: 986 [2018-12-08 18:03:20,435 INFO L226 Difference]: Without dead ends: 938 [2018-12-08 18:03:20,435 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-08 18:03:20,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2018-12-08 18:03:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2018-12-08 18:03:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 938 states. [2018-12-08 18:03:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 2473 transitions. [2018-12-08 18:03:20,452 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 2473 transitions. Word has length 35 [2018-12-08 18:03:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 18:03:20,453 INFO L480 AbstractCegarLoop]: Abstraction has 938 states and 2473 transitions. [2018-12-08 18:03:20,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 18:03:20,453 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 2473 transitions. [2018-12-08 18:03:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-08 18:03:20,454 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 18:03:20,455 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 18:03:20,455 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 18:03:20,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 18:03:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash -447380887, now seen corresponding path program 1 times [2018-12-08 18:03:20,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 18:03:20,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 18:03:20,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 18:03:20,457 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 18:03:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 18:03:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 18:03:20,491 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 18:03:20,514 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-08 18:03:20,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 06:03:20 BasicIcfg [2018-12-08 18:03:20,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 18:03:20,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 18:03:20,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 18:03:20,516 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 18:03:20,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 06:03:19" (3/4) ... [2018-12-08 18:03:20,518 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 18:03:20,550 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9f2a8c6b-8637-4bc7-a94c-cb95c934727a/bin-2019/utaipan/witness.graphml [2018-12-08 18:03:20,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 18:03:20,551 INFO L168 Benchmark]: Toolchain (without parser) took 1468.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 957.1 MB in the beginning and 876.4 MB in the end (delta: 80.7 MB). Peak memory consumption was 190.2 MB. Max. memory is 11.5 GB. [2018-12-08 18:03:20,551 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:03:20,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -128.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. [2018-12-08 18:03:20,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.19 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. [2018-12-08 18:03:20,552 INFO L168 Benchmark]: Boogie Preprocessor took 18.14 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. [2018-12-08 18:03:20,553 INFO L168 Benchmark]: RCFGBuilder took 236.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2018-12-08 18:03:20,553 INFO L168 Benchmark]: TraceAbstraction took 852.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 876.4 MB in the end (delta: 182.5 MB). Peak memory consumption was 182.5 MB. Max. memory is 11.5 GB. [2018-12-08 18:03:20,553 INFO L168 Benchmark]: Witness Printer took 34.10 ms. Allocated memory is still 1.1 GB. Free memory is still 876.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 18:03:20,555 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 294.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -128.1 MB). Peak memory consumption was 31.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.19 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 18.14 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 236.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 852.45 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 876.4 MB in the end (delta: 182.5 MB). Peak memory consumption was 182.5 MB. Max. memory is 11.5 GB. * Witness Printer took 34.10 ms. Allocated memory is still 1.1 GB. Free memory is still 876.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1242]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1217] -1 pthread_mutex_t mutex; VAL [mutex={27:0}] [L1218] -1 int data = 0; VAL [data=0, mutex={27:0}] [L1254] -1 pthread_t t1, t2, t3; VAL [data=0, mutex={27:0}] [L1256] FCALL, FORK -1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={27:0}] [L1257] FCALL, FORK -1 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={27:0}] [L1232] 0 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={27:0}] [L1258] FCALL, FORK -1 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=2, mutex={27:0}] [L1223] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={27:0}] [L1241] COND TRUE 2 data >= 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={27:0}] [L1242] 2 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={27:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 99 locations, 2 error locations. UNSAFE Result, 0.7s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 262 SDtfs, 150 SDslu, 307 SDs, 0 SdLazy, 43 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3562occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 8944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...