./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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_int.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cdaaa62c12cda1d5ef1bfbfdcef4ae5f9da69605 .......................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:43:07,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:43:07,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:43:07,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:43:07,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:43:07,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:43:07,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:43:07,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:43:07,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:43:07,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:43:07,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:43:07,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:43:07,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:43:07,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:43:07,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:43:07,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:43:07,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:43:07,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:43:07,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:43:07,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:43:07,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:43:07,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:43:07,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:43:07,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:43:07,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:43:07,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:43:07,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:43:07,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:43:07,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:43:07,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:43:07,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:43:07,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:43:07,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:43:07,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:43:07,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:43:07,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:43:07,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:43:07,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:43:07,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:43:07,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:43:07,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:43:07,717 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:43:07,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:43:07,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:43:07,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:43:07,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:43:07,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:43:07,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:43:07,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:43:07,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:43:07,742 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:43:07,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:43:07,743 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:43:07,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:43:07,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:43:07,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:43:07,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:43:07,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:43:07,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:43:07,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:43:07,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:43:07,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:43:07,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:43:07,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:43:07,745 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:43:07,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:43:07,745 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(reach_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 -> cdaaa62c12cda1d5ef1bfbfdcef4ae5f9da69605 [2020-10-20 00:43:08,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:43:08,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:43:08,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:43:08,038 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:43:08,039 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:43:08,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2020-10-20 00:43:08,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3102deb2f/22278b3b3d8844c1a66ebee2ac9b9a82/FLAGc86041e4e [2020-10-20 00:43:08,581 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:43:08,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2020-10-20 00:43:08,586 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3102deb2f/22278b3b3d8844c1a66ebee2ac9b9a82/FLAGc86041e4e [2020-10-20 00:43:08,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3102deb2f/22278b3b3d8844c1a66ebee2ac9b9a82 [2020-10-20 00:43:08,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:43:08,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:43:08,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:08,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:43:08,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:43:08,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:08" (1/1) ... [2020-10-20 00:43:08,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f04e51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:08, skipping insertion in model container [2020-10-20 00:43:08,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:08" (1/1) ... [2020-10-20 00:43:08,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:43:09,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:43:09,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:09,298 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:43:09,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:09,350 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:43:09,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09 WrapperNode [2020-10-20 00:43:09,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:09,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:09,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:43:09,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:43:09,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:09,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:43:09,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:43:09,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:43:09,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (1/1) ... [2020-10-20 00:43:09,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:43:09,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:43:09,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:43:09,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:43:09,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (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 [2020-10-20 00:43:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:43:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:43:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:43:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:43:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:43:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:43:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:43:09,756 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:43:09,757 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:43:09,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:09 BoogieIcfgContainer [2020-10-20 00:43:09,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:43:09,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:43:09,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:43:09,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:43:09,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:43:08" (1/3) ... [2020-10-20 00:43:09,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed7bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:09, skipping insertion in model container [2020-10-20 00:43:09,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:09" (2/3) ... [2020-10-20 00:43:09,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ed7bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:09, skipping insertion in model container [2020-10-20 00:43:09,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:09" (3/3) ... [2020-10-20 00:43:09,767 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2020-10-20 00:43:09,780 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:43:09,788 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-20 00:43:09,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-20 00:43:09,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:43:09,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:43:09,878 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:43:09,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:43:09,879 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:43:09,879 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:43:09,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:43:09,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:43:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-20 00:43:09,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-20 00:43:09,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:43:09,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-20 00:43:09,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:43:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:43:09,916 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2020-10-20 00:43:09,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:43:09,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113522843] [2020-10-20 00:43:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:43:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:43:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:43:10,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113522843] [2020-10-20 00:43:10,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:43:10,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 00:43:10,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22247900] [2020-10-20 00:43:10,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 00:43:10,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:43:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 00:43:10,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 00:43:10,141 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-10-20 00:43:10,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:43:10,181 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-10-20 00:43:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 00:43:10,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-20 00:43:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:43:10,194 INFO L225 Difference]: With dead ends: 27 [2020-10-20 00:43:10,194 INFO L226 Difference]: Without dead ends: 8 [2020-10-20 00:43:10,198 INFO L677 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 [2020-10-20 00:43:10,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-10-20 00:43:10,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-10-20 00:43:10,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-20 00:43:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2020-10-20 00:43:10,232 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 4 [2020-10-20 00:43:10,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:43:10,233 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2020-10-20 00:43:10,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 00:43:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2020-10-20 00:43:10,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 00:43:10,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:43:10,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:43:10,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:43:10,235 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:43:10,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:43:10,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1812538254, now seen corresponding path program 1 times [2020-10-20 00:43:10,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:43:10,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435823501] [2020-10-20 00:43:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:43:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:10,265 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:10,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:10,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:43:10,311 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:43:10,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:43:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:43:10 BoogieIcfgContainer [2020-10-20 00:43:10,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:43:10,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:43:10,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:43:10,350 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:43:10,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:09" (3/4) ... [2020-10-20 00:43:10,353 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:43:10,397 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:43:10,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:43:10,400 INFO L168 Benchmark]: Toolchain (without parser) took 1437.46 ms. Allocated memory was 35.1 MB in the beginning and 47.7 MB in the end (delta: 12.6 MB). Free memory was 13.3 MB in the beginning and 24.1 MB in the end (delta: -10.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,401 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.59 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 12.4 MB in the beginning and 25.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 23.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,404 INFO L168 Benchmark]: Boogie Preprocessor took 50.16 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 22.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,405 INFO L168 Benchmark]: RCFGBuilder took 304.26 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 22.7 MB in the beginning and 20.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,406 INFO L168 Benchmark]: TraceAbstraction took 589.11 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 19.7 MB in the beginning and 26.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,407 INFO L168 Benchmark]: Witness Printer took 47.64 ms. Allocated memory is still 47.7 MB. Free memory was 26.4 MB in the beginning and 24.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:10,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 33.6 MB. Free memory was 19.0 MB in the beginning and 19.0 MB in the end (delta: 31.1 kB). Peak memory consumption was 31.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 383.59 ms. Allocated memory was 35.1 MB in the beginning and 44.6 MB in the end (delta: 9.4 MB). Free memory was 12.4 MB in the beginning and 25.7 MB in the end (delta: -13.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 51.35 ms. Allocated memory is still 44.6 MB. Free memory was 25.5 MB in the beginning and 23.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 50.16 ms. Allocated memory is still 44.6 MB. Free memory was 23.9 MB in the beginning and 22.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 304.26 ms. Allocated memory was 44.6 MB in the beginning and 45.1 MB in the end (delta: 524.3 kB). Free memory was 22.7 MB in the beginning and 20.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 589.11 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 19.7 MB in the beginning and 26.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Witness Printer took 47.64 ms. Allocated memory is still 47.7 MB. Free memory was 26.4 MB in the beginning and 24.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L32] int m; [L33] m = 0 [L20] EXPR \read(*a) [L20] COND FALSE !(*a == 1) [L21] *a = 1 [L20] EXPR \read(*a) [L20] COND TRUE *a == 1 [L3] __assert_fail("0", "mutex_lock_int.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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=17occurred 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...