./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/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 0.1.24-678e011 [2019-11-20 07:53:53,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:53:53,243 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:53:53,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:53:53,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:53:53,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:53:53,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:53:53,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:53:53,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:53:53,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:53:53,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:53:53,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:53:53,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:53:53,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:53:53,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:53:53,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:53:53,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:53:53,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:53:53,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:53:53,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:53:53,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:53:53,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:53:53,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:53:53,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:53:53,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:53:53,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:53:53,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:53:53,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:53:53,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:53:53,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:53:53,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:53:53,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:53:53,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:53:53,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:53:53,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:53:53,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:53:53,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:53:53,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:53:53,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:53:53,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:53:53,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:53:53,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 07:53:53,330 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:53:53,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:53:53,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:53:53,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:53:53,332 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:53:53,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:53:53,333 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 07:53:53,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:53:53,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 07:53:53,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:53:53,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 07:53:53,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:53:53,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 07:53:53,335 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 07:53:53,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 07:53:53,336 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:53:53,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 07:53:53,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:53:53,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:53:53,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:53:53,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:53:53,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:53:53,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:53:53,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:53:53,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 07:53:53,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 07:53:53,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 07:53:53,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 07:53:53,338 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_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/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 [2019-11-20 07:53:53,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:53:53,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:53:53,513 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:53:53,515 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:53:53,515 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:53:53,516 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/../../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-20 07:53:53,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/data/5e50ad15a/c131bf002a6c4f47bc7fa18d970fb0fb/FLAGc198a3e75 [2019-11-20 07:53:53,926 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:53:53,927 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-20 07:53:53,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/data/5e50ad15a/c131bf002a6c4f47bc7fa18d970fb0fb/FLAGc198a3e75 [2019-11-20 07:53:54,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/data/5e50ad15a/c131bf002a6c4f47bc7fa18d970fb0fb [2019-11-20 07:53:54,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:53:54,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 07:53:54,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:53:54,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:53:54,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:53:54,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18448f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54, skipping insertion in model container [2019-11-20 07:53:54,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,320 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:53:54,335 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:53:54,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:53:54,488 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:53:54,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:53:54,593 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:53:54,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54 WrapperNode [2019-11-20 07:53:54,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:53:54,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 07:53:54,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 07:53:54,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 07:53:54,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 07:53:54,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:53:54,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:53:54,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:53:54,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... [2019-11-20 07:53:54,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:53:54,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:53:54,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:53:54,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:53:54,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/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 [2019-11-20 07:53:54,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 07:53:54,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:53:54,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:53:54,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 07:53:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 07:53:54,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 07:53:55,049 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:53:55,049 INFO L285 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-20 07:53:55,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:53:55 BoogieIcfgContainer [2019-11-20 07:53:55,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:53:55,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:53:55,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:53:55,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:53:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:53:54" (1/3) ... [2019-11-20 07:53:55,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390295d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:53:55, skipping insertion in model container [2019-11-20 07:53:55,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:53:54" (2/3) ... [2019-11-20 07:53:55,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390295d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:53:55, skipping insertion in model container [2019-11-20 07:53:55,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:53:55" (3/3) ... [2019-11-20 07:53:55,071 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2019-11-20 07:53:55,094 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:53:55,105 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-20 07:53:55,123 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-20 07:53:55,155 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:53:55,155 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 07:53:55,157 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:53:55,158 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:53:55,158 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:53:55,158 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:53:55,159 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:53:55,159 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:53:55,183 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 07:53:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 07:53:55,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:53:55,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 07:53:55,190 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:53:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:53:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-20 07:53:55,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:53:55,212 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935841443] [2019-11-20 07:53:55,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:53:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:53:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:53:55,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935841443] [2019-11-20 07:53:55,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:53:55,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 07:53:55,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987544552] [2019-11-20 07:53:55,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:53:55,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 07:53:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:53:55,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:53:55,455 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-20 07:53:55,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:53:55,486 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-20 07:53:55,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:53:55,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-20 07:53:55,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:53:55,496 INFO L225 Difference]: With dead ends: 25 [2019-11-20 07:53:55,496 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 07:53:55,499 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 [2019-11-20 07:53:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 07:53:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 07:53:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 07:53:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-20 07:53:55,526 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-20 07:53:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:53:55,527 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-20 07:53:55,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:53:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-20 07:53:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 07:53:55,528 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:53:55,528 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:53:55,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 07:53:55,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:53:55,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-20 07:53:55,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 07:53:55,529 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205197680] [2019-11-20 07:53:55,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 07:53:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:53:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 07:53:55,578 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 07:53:55,578 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 07:53:55,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:53:55 BoogieIcfgContainer [2019-11-20 07:53:55,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 07:53:55,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 07:53:55,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 07:53:55,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 07:53:55,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:53:55" (3/4) ... [2019-11-20 07:53:55,609 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 07:53:55,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ddcb310a-f709-4d4e-bf98-0f46c5be0c06/bin/uautomizer/witness.graphml [2019-11-20 07:53:55,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 07:53:55,655 INFO L168 Benchmark]: Toolchain (without parser) took 1351.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -117.2 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-20 07:53:55,656 INFO L168 Benchmark]: CDTParser took 0.29 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. [2019-11-20 07:53:55,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-20 07:53:55,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.58 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-11-20 07:53:55,658 INFO L168 Benchmark]: Boogie Preprocessor took 35.98 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:53:55,659 INFO L168 Benchmark]: RCFGBuilder took 364.88 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-20 07:53:55,660 INFO L168 Benchmark]: TraceAbstraction took 553.13 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-11-20 07:53:55,660 INFO L168 Benchmark]: Witness Printer took 47.81 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 07:53:55,664 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 291.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.58 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.98 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 364.88 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 553.13 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: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.81 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. * 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: 0.4s, 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...