./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_14-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c4a63b42b00dbfea9a5b040626d99ec84a4e61b ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:13:33,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:13:33,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:13:33,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:13:33,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:13:33,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:13:33,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:13:33,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:13:33,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:13:33,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:13:33,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:13:33,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:13:33,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:13:33,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:13:33,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:13:33,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:13:33,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:13:33,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:13:33,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:13:33,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:13:33,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:13:33,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:13:33,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:13:33,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:13:33,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:13:33,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:13:33,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:13:33,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:13:33,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:13:33,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:13:33,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:13:33,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:13:33,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:13:33,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:13:33,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:13:33,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:13:33,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:13:33,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:13:33,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:13:33,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:13:33,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:13:33,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:13:33,633 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:13:33,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:13:33,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:13:33,634 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:13:33,634 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:13:33,634 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:13:33,635 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:13:33,635 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:13:33,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:13:33,635 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:13:33,635 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:13:33,636 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:13:33,636 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:13:33,636 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:13:33,636 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:13:33,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:13:33,637 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:13:33,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:13:33,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:13:33,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:13:33,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:13:33,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:13:33,639 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:13:33,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:13:33,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:13:33,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:13:33,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:13:33,641 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c4a63b42b00dbfea9a5b040626d99ec84a4e61b [2019-11-26 02:13:33,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:13:33,786 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:13:33,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:13:33,790 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:13:33,791 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:13:33,791 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_14-2.c [2019-11-26 02:13:33,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/data/3d4425604/1c2ae3dd9cec45a491aada8d6f51a682/FLAG55693097b [2019-11-26 02:13:34,234 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:13:34,235 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/sv-benchmarks/c/locks/test_locks_14-2.c [2019-11-26 02:13:34,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/data/3d4425604/1c2ae3dd9cec45a491aada8d6f51a682/FLAG55693097b [2019-11-26 02:13:34,253 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/data/3d4425604/1c2ae3dd9cec45a491aada8d6f51a682 [2019-11-26 02:13:34,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:13:34,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:13:34,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:34,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:13:34,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:13:34,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69519b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34, skipping insertion in model container [2019-11-26 02:13:34,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:13:34,290 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:13:34,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:34,531 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:13:34,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:13:34,603 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:13:34,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34 WrapperNode [2019-11-26 02:13:34,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:13:34,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:34,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:13:34,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:13:34,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,646 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:13:34,646 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:13:34,646 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:13:34,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:13:34,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... [2019-11-26 02:13:34,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:13:34,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:13:34,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:13:34,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:13:34,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:13:34,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:13:34,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:13:35,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:13:35,374 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:13:35,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:35 BoogieIcfgContainer [2019-11-26 02:13:35,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:13:35,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:13:35,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:13:35,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:13:35,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:13:34" (1/3) ... [2019-11-26 02:13:35,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc8889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:35, skipping insertion in model container [2019-11-26 02:13:35,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:13:34" (2/3) ... [2019-11-26 02:13:35,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc8889c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:13:35, skipping insertion in model container [2019-11-26 02:13:35,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:35" (3/3) ... [2019-11-26 02:13:35,380 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_14-2.c [2019-11-26 02:13:35,388 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:13:35,393 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:13:35,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:13:35,422 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:13:35,422 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:13:35,423 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:13:35,423 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:13:35,425 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:13:35,425 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:13:35,425 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:13:35,425 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:13:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-11-26 02:13:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:13:35,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:35,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:13:35,446 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:13:35,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:35,450 INFO L82 PathProgramCache]: Analyzing trace with hash 934198341, now seen corresponding path program 1 times [2019-11-26 02:13:35,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:35,457 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289175431] [2019-11-26 02:13:35,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:13:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:13:35,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289175431] [2019-11-26 02:13:35,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:13:35,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:13:35,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135550887] [2019-11-26 02:13:35,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:13:35,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:13:35,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:13:35,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:13:35,634 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2019-11-26 02:13:35,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:13:35,696 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2019-11-26 02:13:35,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:13:35,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-26 02:13:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:13:35,708 INFO L225 Difference]: With dead ends: 74 [2019-11-26 02:13:35,708 INFO L226 Difference]: Without dead ends: 63 [2019-11-26 02:13:35,710 INFO L630 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 [2019-11-26 02:13:35,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-26 02:13:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 33. [2019-11-26 02:13:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-26 02:13:35,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2019-11-26 02:13:35,738 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 6 [2019-11-26 02:13:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:13:35,738 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2019-11-26 02:13:35,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:13:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2019-11-26 02:13:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:13:35,739 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:13:35,739 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:13:35,739 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:13:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:13:35,740 INFO L82 PathProgramCache]: Analyzing trace with hash 934205533, now seen corresponding path program 1 times [2019-11-26 02:13:35,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:13:35,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528589418] [2019-11-26 02:13:35,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:13:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:13:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:13:35,826 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:13:35,826 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:13:35,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:13:35 BoogieIcfgContainer [2019-11-26 02:13:35,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:13:35,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:13:35,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:13:35,850 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:13:35,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:13:35" (3/4) ... [2019-11-26 02:13:35,852 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:13:35,915 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5aebf268-a286-4464-b37c-12fc05d82d7f/bin/utaipan/witness.graphml [2019-11-26 02:13:35,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:13:35,918 INFO L168 Benchmark]: Toolchain (without parser) took 1660.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -98.9 MB). Peak memory consumption was 55.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:35,918 INFO L168 Benchmark]: CDTParser took 0.23 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. [2019-11-26 02:13:35,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:35,919 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:35,919 INFO L168 Benchmark]: Boogie Preprocessor took 21.16 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:13:35,920 INFO L168 Benchmark]: RCFGBuilder took 707.40 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: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:35,920 INFO L168 Benchmark]: TraceAbstraction took 473.91 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:35,921 INFO L168 Benchmark]: Witness Printer took 65.88 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:13:35,923 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 346.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -193.8 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.16 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 707.40 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: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 473.91 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 11.5 GB. * Witness Printer took 65.88 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 217]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int p1 = __VERIFIER_nondet_int(); [L7] int lk1; [L9] int p2 = __VERIFIER_nondet_int(); [L10] int lk2; [L12] int p3 = __VERIFIER_nondet_int(); [L13] int lk3; [L15] int p4 = __VERIFIER_nondet_int(); [L16] int lk4; [L18] int p5 = __VERIFIER_nondet_int(); [L19] int lk5; [L21] int p6 = __VERIFIER_nondet_int(); [L22] int lk6; [L24] int p7 = __VERIFIER_nondet_int(); [L25] int lk7; [L27] int p8 = __VERIFIER_nondet_int(); [L28] int lk8; [L30] int p9 = __VERIFIER_nondet_int(); [L31] int lk9; [L33] int p10 = __VERIFIER_nondet_int(); [L34] int lk10; [L36] int p11 = __VERIFIER_nondet_int(); [L37] int lk11; [L39] int p12 = __VERIFIER_nondet_int(); [L40] int lk12; [L42] int p13 = __VERIFIER_nondet_int(); [L43] int lk13; [L45] int p14 = __VERIFIER_nondet_int(); [L46] int lk14; [L49] int cond; [L51] COND TRUE 1 [L52] cond = __VERIFIER_nondet_int() [L53] COND FALSE !(cond == 0) [L56] lk1 = 0 [L58] lk2 = 0 [L60] lk3 = 0 [L62] lk4 = 0 [L64] lk5 = 0 [L66] lk6 = 0 [L68] lk7 = 0 [L70] lk8 = 0 [L72] lk9 = 0 [L74] lk10 = 0 [L76] lk11 = 0 [L78] lk12 = 0 [L80] lk13 = 0 [L82] lk14 = 0 [L86] COND FALSE !(p1 != 0) [L90] COND FALSE !(p2 != 0) [L94] COND FALSE !(p3 != 0) [L98] COND TRUE p4 != 0 [L99] lk4 = 1 [L102] COND TRUE p5 != 0 [L103] lk5 = 1 [L106] COND FALSE !(p6 != 0) [L110] COND TRUE p7 != 0 [L111] lk7 = 1 [L114] COND TRUE p8 != 0 [L115] lk8 = 1 [L118] COND FALSE !(p9 != 0) [L122] COND TRUE p10 != 0 [L123] lk10 = 1 [L126] COND TRUE p11 != 0 [L127] lk11 = 1 [L130] COND FALSE !(p12 != 0) [L134] COND TRUE p13 != 0 [L135] lk13 = 1 [L138] COND FALSE !(p14 != 0) [L144] COND FALSE !(p1 != 0) [L149] COND FALSE !(p2 != 0) [L217] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...