./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_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer --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 Automizer --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 [2019-11-25 08:49:08,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:08,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:08,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:08,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:08,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:08,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:08,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:08,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:08,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:08,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:08,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:08,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:08,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:08,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:08,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:08,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:08,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:08,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:08,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:08,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:08,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:08,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:08,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:08,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:08,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:08,711 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:08,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:08,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:08,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:08,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:08,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:08,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:08,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:08,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:08,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:08,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:08,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:08,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:08,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:08,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:08,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:49:08,748 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:08,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:08,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:08,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:08,750 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:08,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:08,751 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:08,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:08,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:08,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:08,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:49:08,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:08,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:49:08,753 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:08,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:49:08,753 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:08,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:49:08,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:08,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:08,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:08,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:08,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:08,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:08,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:49:08,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:49:08,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:49:08,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:49:08,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer 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 -> Automizer 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 [2019-11-25 08:49:08,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:08,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:08,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:08,930 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:08,931 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:08,931 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-25 08:49:08,981 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/data/7b1502f94/2e8ec044932a400ea629bb6660ef4c00/FLAG2f02b658d [2019-11-25 08:49:09,372 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:09,373 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-25 08:49:09,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/data/7b1502f94/2e8ec044932a400ea629bb6660ef4c00/FLAG2f02b658d [2019-11-25 08:49:09,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/data/7b1502f94/2e8ec044932a400ea629bb6660ef4c00 [2019-11-25 08:49:09,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:09,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:49:09,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:09,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:09,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:09,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751b421f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09, skipping insertion in model container [2019-11-25 08:49:09,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:09,419 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:09,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:09,554 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:09,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:09,644 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:09,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09 WrapperNode [2019-11-25 08:49:09,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:09,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:09,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:49:09,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:49:09,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:49:09,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:09,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:09,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:09,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... [2019-11-25 08:49:09,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:09,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:09,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:09,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:09,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/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 [2019-11-25 08:49:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:49:09,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:09,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:09,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:49:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:09,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:10,032 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:10,032 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-25 08:49:10,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:10 BoogieIcfgContainer [2019-11-25 08:49:10,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:10,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:10,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:10,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:10,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:09" (1/3) ... [2019-11-25 08:49:10,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2478b4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:10, skipping insertion in model container [2019-11-25 08:49:10,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:09" (2/3) ... [2019-11-25 08:49:10,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2478b4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:10, skipping insertion in model container [2019-11-25 08:49:10,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:10" (3/3) ... [2019-11-25 08:49:10,057 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2019-11-25 08:49:10,066 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:10,087 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-25 08:49:10,115 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-25 08:49:10,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:10,146 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:49:10,146 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:10,148 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:10,148 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:10,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:10,149 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:10,149 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-25 08:49:10,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-25 08:49:10,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:10,175 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-25 08:49:10,176 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:10,185 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-25 08:49:10,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:10,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887680277] [2019-11-25 08:49:10,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:49:10,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:49:10,377 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887680277] [2019-11-25 08:49:10,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:49:10,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:49:10,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819930726] [2019-11-25 08:49:10,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:49:10,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:49:10,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:49:10,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:49:10,396 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-25 08:49:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:49:10,421 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-25 08:49:10,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:49:10,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-25 08:49:10,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:49:10,430 INFO L225 Difference]: With dead ends: 25 [2019-11-25 08:49:10,430 INFO L226 Difference]: Without dead ends: 8 [2019-11-25 08:49:10,433 INFO L630 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 [2019-11-25 08:49:10,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-25 08:49:10,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-25 08:49:10,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:49:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-25 08:49:10,457 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-25 08:49:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:49:10,458 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-25 08:49:10,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:49:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-25 08:49:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:49:10,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:10,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:10,459 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:49:10,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:10,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-25 08:49:10,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:49:10,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535112511] [2019-11-25 08:49:10,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:49:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:10,509 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:49:10,509 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:10,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:10 BoogieIcfgContainer [2019-11-25 08:49:10,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:10,532 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:10,532 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:10,533 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:10,533 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:10" (3/4) ... [2019-11-25 08:49:10,535 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:10,574 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6446b31c-4c1a-4ec8-9cb8-392e2c83cfd2/bin/uautomizer/witness.graphml [2019-11-25 08:49:10,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:10,576 INFO L168 Benchmark]: Toolchain (without parser) took 1184.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -137.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:10,576 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:10,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:10,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:10,578 INFO L168 Benchmark]: Boogie Preprocessor took 31.39 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. [2019-11-25 08:49:10,579 INFO L168 Benchmark]: RCFGBuilder took 307.61 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:10,580 INFO L168 Benchmark]: TraceAbstraction took 497.80 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:10,580 INFO L168 Benchmark]: Witness Printer took 41.61 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. [2019-11-25 08:49:10,584 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 253.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -185.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.86 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.39 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 307.61 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 497.80 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 41.61 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. * 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, 15 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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...