./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 ..................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 11:01:02,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:01:02,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:01:02,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:01:02,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:01:02,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:01:02,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:01:02,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:01:02,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:01:02,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:01:02,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:01:02,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:01:02,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:01:02,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:01:02,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:01:02,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:01:02,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:01:02,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:01:02,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:01:02,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:01:02,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:01:02,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:01:02,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:01:02,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:01:02,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:01:02,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:01:02,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:01:02,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:01:02,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:01:02,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:01:02,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:01:02,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:01:02,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:01:02,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:01:02,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:01:02,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:01:02,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:01:02,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:01:02,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:01:02,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:01:02,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:01:02,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:01:02,478 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:01:02,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:01:02,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:01:02,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:01:02,479 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:01:02,480 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:01:02,480 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:01:02,480 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:01:02,480 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:01:02,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:01:02,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:01:02,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:01:02,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:01:02,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:01:02,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:01:02,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:01:02,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:01:02,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:01:02,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:01:02,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:01:02,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:01:02,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:01:02,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:01:02,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:01:02,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:01:02,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:01:02,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dd19b8066311da8c1eb1c6a0e6567bb02c0b787 [2020-12-09 11:01:02,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:01:02,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:01:02,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:01:02,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:01:02,676 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:01:02,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-2.c [2020-12-09 11:01:02,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/data/6615f4585/d5d326fed9d94a68b2d1948c836d0a68/FLAG7badca2ed [2020-12-09 11:01:03,094 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:01:03,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/sv-benchmarks/c/locks/test_locks_14-2.c [2020-12-09 11:01:03,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/data/6615f4585/d5d326fed9d94a68b2d1948c836d0a68/FLAG7badca2ed [2020-12-09 11:01:03,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/data/6615f4585/d5d326fed9d94a68b2d1948c836d0a68 [2020-12-09 11:01:03,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:01:03,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:01:03,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:01:03,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:01:03,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:01:03,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22be2d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03, skipping insertion in model container [2020-12-09 11:01:03,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:01:03,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:01:03,257 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2020-12-09 11:01:03,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:01:03,270 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:01:03,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/sv-benchmarks/c/locks/test_locks_14-2.c[5305,5318] [2020-12-09 11:01:03,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:01:03,309 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:01:03,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03 WrapperNode [2020-12-09 11:01:03,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:01:03,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:01:03,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:01:03,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:01:03,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:01:03,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:01:03,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:01:03,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:01:03,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... [2020-12-09 11:01:03,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:01:03,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:01:03,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:01:03,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:01:03,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:01:03,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:01:03,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:01:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:01:03,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:01:03,843 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:01:03,843 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-09 11:01:03,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:01:03 BoogieIcfgContainer [2020-12-09 11:01:03,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:01:03,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:01:03,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:01:03,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:01:03,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:01:03" (1/3) ... [2020-12-09 11:01:03,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c693a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:01:03, skipping insertion in model container [2020-12-09 11:01:03,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:01:03" (2/3) ... [2020-12-09 11:01:03,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c693a22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:01:03, skipping insertion in model container [2020-12-09 11:01:03,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:01:03" (3/3) ... [2020-12-09 11:01:03,852 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2020-12-09 11:01:03,865 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:01:03,868 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:01:03,876 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:01:03,893 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:01:03,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:01:03,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:01:03,893 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:01:03,893 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:01:03,893 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:01:03,894 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:01:03,894 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:01:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-12-09 11:01:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:01:03,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:01:03,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:01:03,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:01:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:01:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash -96656291, now seen corresponding path program 1 times [2020-12-09 11:01:03,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:01:03,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969323035] [2020-12-09 11:01:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:01:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:01:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:01:04,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969323035] [2020-12-09 11:01:04,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:01:04,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:01:04,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141300532] [2020-12-09 11:01:04,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:01:04,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:01:04,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:01:04,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:01:04,075 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-12-09 11:01:04,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:01:04,116 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-12-09 11:01:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:01:04,118 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 11:01:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:01:04,126 INFO L225 Difference]: With dead ends: 74 [2020-12-09 11:01:04,127 INFO L226 Difference]: Without dead ends: 63 [2020-12-09 11:01:04,128 INFO L677 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 [2020-12-09 11:01:04,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-09 11:01:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2020-12-09 11:01:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 11:01:04,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2020-12-09 11:01:04,157 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2020-12-09 11:01:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:01:04,158 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2020-12-09 11:01:04,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:01:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2020-12-09 11:01:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:01:04,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:01:04,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:01:04,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:01:04,159 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:01:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:01:04,160 INFO L82 PathProgramCache]: Analyzing trace with hash -96649099, now seen corresponding path program 1 times [2020-12-09 11:01:04,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:01:04,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857716717] [2020-12-09 11:01:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:01:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:01:04,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:01:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 11:01:04,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 11:01:04,246 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 11:01:04,246 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 11:01:04,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:01:04,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:01:04 BoogieIcfgContainer [2020-12-09 11:01:04,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:01:04,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:01:04,273 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:01:04,274 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:01:04,274 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:01:03" (3/4) ... [2020-12-09 11:01:04,276 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 11:01:04,317 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f7ebcff4-6892-4129-97d7-f9425a1598cf/bin/utaipan/witness.graphml [2020-12-09 11:01:04,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:01:04,318 INFO L168 Benchmark]: Toolchain (without parser) took 1202.01 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 44.7 MB in the end (delta: 42.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:01:04,319 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 111.1 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:01:04,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.69 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 86.7 MB in the end (delta: -99.2 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:01:04,320 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 84.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:01:04,320 INFO L168 Benchmark]: Boogie Preprocessor took 18.30 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 83.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:01:04,320 INFO L168 Benchmark]: RCFGBuilder took 488.81 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 77.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:01:04,321 INFO L168 Benchmark]: TraceAbstraction took 425.99 ms. Allocated memory is still 111.1 MB. Free memory was 77.2 MB in the beginning and 47.9 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:01:04,321 INFO L168 Benchmark]: Witness Printer took 43.69 ms. Allocated memory is still 111.1 MB. Free memory was 47.9 MB in the beginning and 44.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:01:04,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 111.1 MB. Free memory is still 76.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 193.69 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 86.7 MB in the end (delta: -99.2 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.50 ms. Allocated memory is still 111.1 MB. Free memory was 86.7 MB in the beginning and 84.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.30 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 83.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 488.81 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 77.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 44.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 425.99 ms. Allocated memory is still 111.1 MB. Free memory was 77.2 MB in the beginning and 47.9 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 43.69 ms. Allocated memory is still 111.1 MB. Free memory was 47.9 MB in the beginning and 44.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 219]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND FALSE !(p2 != 0) [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND TRUE p8 != 0 [L117] lk8 = 1 [L120] COND TRUE p9 != 0 [L121] lk9 = 1 [L124] COND TRUE p10 != 0 [L125] lk10 = 1 [L128] COND TRUE p11 != 0 [L129] lk11 = 1 [L132] COND TRUE p12 != 0 [L133] lk12 = 1 [L136] COND TRUE p13 != 0 [L137] lk13 = 1 [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND FALSE !(p2 != 0) [L219] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 59 SDslu, 114 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 30 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 65 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...