./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 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.24-30f4e4a [2019-11-27 23:52:58,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:52:58,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:52:58,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:52:58,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:52:58,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:52:58,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:52:58,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:52:58,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:52:58,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:52:58,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:52:58,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:52:58,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:52:58,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:52:58,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:52:58,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:52:58,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:52:58,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:52:58,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:52:58,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:52:58,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:52:58,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:52:58,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:52:58,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:52:58,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:52:58,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:52:58,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:52:58,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:52:58,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:52:58,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:52:58,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:52:58,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:52:58,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:52:58,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:52:58,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:52:58,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:52:58,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:52:58,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:52:58,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:52:58,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:52:58,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:52:58,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:52:58,592 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:52:58,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:52:58,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:52:58,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:52:58,595 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:52:58,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:52:58,595 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:52:58,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:52:58,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:52:58,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:52:58,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:52:58,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:52:58,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:52:58,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:52:58,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:52:58,599 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:52:58,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:52:58,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:52:58,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:52:58,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:52:58,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:52:58,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:52:58,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:52:58,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:52:58,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:52:58,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:52:58,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:52:58,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:52:58,602 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2019-11-27 23:52:58,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:52:58,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:52:58,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:52:58,952 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:52:58,953 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:52:58,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-27 23:52:59,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b94c5c9/5481775bda1348c1874d4f1645f5471d/FLAG27af66cd7 [2019-11-27 23:52:59,466 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:52:59,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_struct.i [2019-11-27 23:52:59,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b94c5c9/5481775bda1348c1874d4f1645f5471d/FLAG27af66cd7 [2019-11-27 23:52:59,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b94c5c9/5481775bda1348c1874d4f1645f5471d [2019-11-27 23:52:59,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:52:59,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:52:59,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:52:59,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:52:59,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:52:59,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:59" (1/1) ... [2019-11-27 23:52:59,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c99d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:52:59, skipping insertion in model container [2019-11-27 23:52:59,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:52:59" (1/1) ... [2019-11-27 23:52:59,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:52:59,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:00,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:00,090 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:00,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:00,130 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00 WrapperNode [2019-11-27 23:53:00,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:00,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:00,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:00,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:00,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:00,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:00,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:00,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:00,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,251 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... [2019-11-27 23:53:00,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:00,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:00,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:00,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:00,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-27 23:53:00,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:00,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:00,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:53:00,498 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:00,499 INFO L297 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-27 23:53:00,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:00 BoogieIcfgContainer [2019-11-27 23:53:00,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:00,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:00,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:00,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:00,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:52:59" (1/3) ... [2019-11-27 23:53:00,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796a4e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:00, skipping insertion in model container [2019-11-27 23:53:00,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:00" (2/3) ... [2019-11-27 23:53:00,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796a4e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:00, skipping insertion in model container [2019-11-27 23:53:00,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:00" (3/3) ... [2019-11-27 23:53:00,533 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.i [2019-11-27 23:53:00,561 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:00,579 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-27 23:53:00,609 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-27 23:53:00,644 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:00,644 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:00,645 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:00,645 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:00,645 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:00,645 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:00,646 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:00,646 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-27 23:53:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 23:53:00,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:00,666 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 23:53:00,667 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:00,675 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2019-11-27 23:53:00,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:00,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312390114] [2019-11-27 23:53:00,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:00,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312390114] [2019-11-27 23:53:00,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:00,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-27 23:53:00,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068289118] [2019-11-27 23:53:00,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-27 23:53:00,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-27 23:53:00,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-27 23:53:00,863 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-27 23:53:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:00,890 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2019-11-27 23:53:00,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:53:00,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-27 23:53:00,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:00,901 INFO L225 Difference]: With dead ends: 25 [2019-11-27 23:53:00,901 INFO L226 Difference]: Without dead ends: 8 [2019-11-27 23:53:00,904 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 [2019-11-27 23:53:00,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-27 23:53:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-27 23:53:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-27 23:53:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-27 23:53:00,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2019-11-27 23:53:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:00,941 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-27 23:53:00,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-27 23:53:00,941 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-27 23:53:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-27 23:53:00,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:00,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:00,942 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:00,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1810629644, now seen corresponding path program 1 times [2019-11-27 23:53:00,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:00,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993044542] [2019-11-27 23:53:00,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:53:01,020 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:53:01,020 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:53:01,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:53:01 BoogieIcfgContainer [2019-11-27 23:53:01,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:53:01,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:53:01,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:53:01,051 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:53:01,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:00" (3/4) ... [2019-11-27 23:53:01,053 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:53:01,093 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:53:01,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:53:01,096 INFO L168 Benchmark]: Toolchain (without parser) took 1255.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -131.0 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:01,097 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:01,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.33 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:01,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:01,100 INFO L168 Benchmark]: Boogie Preprocessor took 24.56 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. [2019-11-27 23:53:01,101 INFO L168 Benchmark]: RCFGBuilder took 245.77 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:01,102 INFO L168 Benchmark]: TraceAbstraction took 540.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:01,102 INFO L168 Benchmark]: Witness Printer took 43.31 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. [2019-11-27 23:53:01,107 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 291.33 ms. Allocated memory is still 1.0 GB. Free memory was 956.3 MB in the beginning and 945.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.56 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 245.77 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: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 540.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * Witness Printer took 43.31 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L33] struct mutex m; [L34] m.is_locked = 0 [L21] EXPR a->is_locked [L21] COND FALSE !(a->is_locked == 1) [L22] a->is_locked = 1 [L21] EXPR a->is_locked [L21] COND TRUE a->is_locked == 1 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...