./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/mutex_lock_int.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:25,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:25,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:25,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:25,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:25,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:25,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:25,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:25,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:25,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:25,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:25,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:25,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:25,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:25,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:25,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:25,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:25,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:25,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:25,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:25,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:25,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:25,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:25,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:25,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:25,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:25,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:25,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:25,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:25,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:25,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:25,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:25,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:25,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:25,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:25,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:25,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:25,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:25,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:25,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:25,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:25,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:49:25,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:25,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:25,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:25,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:25,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:25,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:25,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:25,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:25,654 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:25,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:25,655 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:25,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:25,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:25,657 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:25,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:25,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:25,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:25,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:25,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:25,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:25,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:25,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:25,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:49:25,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:49:25,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:25,660 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:25,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:25,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd [2022-02-20 16:49:25,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:25,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:25,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:25,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:25,886 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:25,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2022-02-20 16:49:25,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42715aab/a8a69f7944014128829b219f93ba33bb/FLAG56040e8b4 [2022-02-20 16:49:26,270 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:26,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2022-02-20 16:49:26,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42715aab/a8a69f7944014128829b219f93ba33bb/FLAG56040e8b4 [2022-02-20 16:49:26,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f42715aab/a8a69f7944014128829b219f93ba33bb [2022-02-20 16:49:26,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:26,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:26,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:26,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:26,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:26,712 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65520aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26, skipping insertion in model container [2022-02-20 16:49:26,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:26,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:26,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2022-02-20 16:49:26,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:26,878 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:26,886 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2022-02-20 16:49:26,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:26,903 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:26,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26 WrapperNode [2022-02-20 16:49:26,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:26,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:26,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:26,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:26,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,929 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-02-20 16:49:26,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:26,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:26,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:26,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:26,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:26,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:26,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:26,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:26,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (1/1) ... [2022-02-20 16:49:26,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:26,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:49:26,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:49:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-02-20 16:49:27,011 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-02-20 16:49:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:49:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 16:49:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-02-20 16:49:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-02-20 16:49:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:27,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 16:49:27,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:27,058 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:27,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:27,175 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:27,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:27,179 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:27,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:27 BoogieIcfgContainer [2022-02-20 16:49:27,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:27,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:27,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:27,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:27,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:26" (1/3) ... [2022-02-20 16:49:27,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39f50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:27, skipping insertion in model container [2022-02-20 16:49:27,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:26" (2/3) ... [2022-02-20 16:49:27,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39f50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:27, skipping insertion in model container [2022-02-20 16:49:27,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:27" (3/3) ... [2022-02-20 16:49:27,196 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2022-02-20 16:49:27,199 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:27,200 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:27,254 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:27,260 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:49:27,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 16:49:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:49:27,277 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:27,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:27,279 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 847153890, now seen corresponding path program 1 times [2022-02-20 16:49:27,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:49:27,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421256826] [2022-02-20 16:49:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:49:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:27,445 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(17, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-02-20 16:49:27,446 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~#m~0#1.base, main_~#m~0#1.offset;call main_~#m~0#1.base, main_~#m~0#1.offset := #Ultimate.allocOnStack(4);call write~int(0, main_~#m~0#1.base, main_~#m~0#1.offset, 4); {23#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) 0)} is VALID [2022-02-20 16:49:27,450 INFO L272 TraceCheckUtils]: 2: Hoare triple {23#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) 0)} call mutex_lock(main_~#m~0#1.base, main_~#m~0#1.offset); {24#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} is VALID [2022-02-20 16:49:27,451 INFO L290 TraceCheckUtils]: 3: Hoare triple {24#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)} ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem4 := read~int(~a.base, ~a.offset, 4); {25#(= |mutex_lock_#t~mem4| 0)} is VALID [2022-02-20 16:49:27,452 INFO L290 TraceCheckUtils]: 4: Hoare triple {25#(= |mutex_lock_#t~mem4| 0)} assume 1 == #t~mem4;havoc #t~mem4; {22#false} is VALID [2022-02-20 16:49:27,452 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call err(); {22#false} is VALID [2022-02-20 16:49:27,453 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 16:49:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:49:27,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:49:27,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421256826] [2022-02-20 16:49:27,456 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421256826] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:49:27,456 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:49:27,456 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 16:49:27,457 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888289598] [2022-02-20 16:49:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:49:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:27,463 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:49:27,465 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:27,476 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:27,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 16:49:27,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:49:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 16:49:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:49:27,509 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:27,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:27,632 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-20 16:49:27,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 16:49:27,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:27,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:49:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:27,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:27,644 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 39 transitions. [2022-02-20 16:49:27,685 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:27,691 INFO L225 Difference]: With dead ends: 34 [2022-02-20 16:49:27,691 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 16:49:27,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-20 16:49:27,696 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:49:27,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:49:27,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 16:49:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 16:49:27,716 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:49:27,717 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:27,717 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:27,717 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:27,720 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:27,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:27,721 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:27,721 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:27,722 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:27,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:27,727 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:27,736 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:27,736 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:27,736 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:49:27,736 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:49:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-02-20 16:49:27,739 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 7 [2022-02-20 16:49:27,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:49:27,739 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-02-20 16:49:27,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:27,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-20 16:49:27,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:27,740 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:27,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:49:27,740 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1741455158, now seen corresponding path program 1 times [2022-02-20 16:49:27,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:49:27,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007886024] [2022-02-20 16:49:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:49:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:27,775 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:27,828 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:49:27,828 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:27,829 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:27,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:49:27,833 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:49:27,835 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:27,850 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call mutex_lock(~#m~0); [2022-02-20 16:49:27,851 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:27,860 INFO L158 Benchmark]: Toolchain (without parser) took 1144.18ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 70.8MB in the beginning and 78.7MB in the end (delta: -7.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2022-02-20 16:49:27,861 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:27,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.59ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 76.0MB in the end (delta: -5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:49:27,862 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.19ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:27,863 INFO L158 Benchmark]: Boogie Preprocessor took 20.99ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 857.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:27,863 INFO L158 Benchmark]: RCFGBuilder took 228.71ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 16:49:27,863 INFO L158 Benchmark]: TraceAbstraction took 670.31ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.9MB in the beginning and 78.7MB in the end (delta: -14.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-02-20 16:49:27,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 54.9MB in the beginning and 54.9MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.59ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 76.0MB in the end (delta: -5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.19ms. Allocated memory is still 98.6MB. Free memory was 76.0MB in the beginning and 74.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.99ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.6MB in the end (delta: 857.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 228.71ms. Allocated memory is still 98.6MB. Free memory was 73.6MB in the beginning and 64.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 670.31ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.9MB in the beginning and 78.7MB in the end (delta: -14.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:27,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_Bitvector.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 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:49:29,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:49:29,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:49:29,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:49:29,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:49:29,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:49:29,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:49:29,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:49:29,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:49:29,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:49:29,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:49:29,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:49:29,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:49:29,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:49:29,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:49:29,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:49:29,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:49:29,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:49:29,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:49:29,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:49:29,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:49:29,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:49:29,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:49:29,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:49:29,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:49:29,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:49:29,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:49:29,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:49:29,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:49:29,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:49:29,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:49:29,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:49:29,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:49:29,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:49:29,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:49:29,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:49:29,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:49:29,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:49:29,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:49:29,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:49:29,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:49:29,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:49:29,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:49:29,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:49:29,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:49:29,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:49:29,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:49:29,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:49:29,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:49:29,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:49:29,679 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:49:29,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:49:29,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:49:29,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:49:29,681 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:49:29,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:49:29,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:49:29,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:49:29,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:49:29,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:49:29,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:49:29,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:49:29,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:29,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:49:29,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:49:29,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:49:29,689 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:49:29,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:49:29,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:49:29,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:49:29,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:49:29,690 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:49:29,691 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b169d38538f0c8a0181bbf45a50b1cbddb80f9f42a6ac6255edc1f7c35c3dfd [2022-02-20 16:49:29,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:49:29,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:49:29,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:49:29,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:49:29,981 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:49:29,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2022-02-20 16:49:30,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82809c003/a5c7009849294d6391fc0d2357d5c7cc/FLAG1e0099b13 [2022-02-20 16:49:30,382 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:49:30,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i [2022-02-20 16:49:30,387 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82809c003/a5c7009849294d6391fc0d2357d5c7cc/FLAG1e0099b13 [2022-02-20 16:49:30,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82809c003/a5c7009849294d6391fc0d2357d5c7cc [2022-02-20 16:49:30,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:49:30,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:49:30,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:30,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:49:30,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:49:30,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48254b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30, skipping insertion in model container [2022-02-20 16:49:30,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:49:30,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:49:30,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2022-02-20 16:49:30,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:30,529 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:49:30,548 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/mutex_lock_int.i[293,306] [2022-02-20 16:49:30,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:49:30,603 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:49:30,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30 WrapperNode [2022-02-20 16:49:30,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:49:30,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:30,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:49:30,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:49:30,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,629 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-02-20 16:49:30,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:49:30,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:49:30,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:49:30,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:49:30,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:49:30,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:49:30,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:49:30,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:49:30,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (1/1) ... [2022-02-20 16:49:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:49:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:49:30,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:49:30,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:49:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:49:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure err [2022-02-20 16:49:30,768 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2022-02-20 16:49:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:49:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 16:49:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-02-20 16:49:30,771 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-02-20 16:49:30,771 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-02-20 16:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:49:30,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 16:49:30,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-02-20 16:49:30,833 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:49:30,834 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:49:30,954 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:49:30,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:49:30,959 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:49:30,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:30 BoogieIcfgContainer [2022-02-20 16:49:30,960 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:49:30,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:49:30,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:49:30,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:49:30,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:49:30" (1/3) ... [2022-02-20 16:49:30,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378dec75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:30, skipping insertion in model container [2022-02-20 16:49:30,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:49:30" (2/3) ... [2022-02-20 16:49:30,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378dec75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:49:30, skipping insertion in model container [2022-02-20 16:49:30,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:49:30" (3/3) ... [2022-02-20 16:49:30,965 INFO L111 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.i [2022-02-20 16:49:30,986 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:49:30,986 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:49:31,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:49:31,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:49:31,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:49:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-20 16:49:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:49:31,086 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:31,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:31,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:31,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:31,091 INFO L85 PathProgramCache]: Analyzing trace with hash 847153890, now seen corresponding path program 1 times [2022-02-20 16:49:31,104 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:49:31,105 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994316617] [2022-02-20 16:49:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:49:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:49:31,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:49:31,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:49:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:31,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-20 16:49:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:49:31,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:49:31,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-02-20 16:49:31,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-20 16:49:31,399 INFO L290 TraceCheckUtils]: 0: Hoare triple {21#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(17bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {21#true} is VALID [2022-02-20 16:49:31,401 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~#m~0#1.base, main_~#m~0#1.offset;call main_~#m~0#1.base, main_~#m~0#1.offset := #Ultimate.allocOnStack(4bv32);call write~intINTTYPE4(0bv32, main_~#m~0#1.base, main_~#m~0#1.offset, 4bv32); {29#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) (_ bv0 32))} is VALID [2022-02-20 16:49:31,403 INFO L272 TraceCheckUtils]: 2: Hoare triple {29#(= (select (select |#memory_int| |ULTIMATE.start_main_~#m~0#1.base|) |ULTIMATE.start_main_~#m~0#1.offset|) (_ bv0 32))} call mutex_lock(main_~#m~0#1.base, main_~#m~0#1.offset); {33#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) (_ bv0 32))} is VALID [2022-02-20 16:49:31,404 INFO L290 TraceCheckUtils]: 3: Hoare triple {33#(= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) (_ bv0 32))} ~a.base, ~a.offset := #in~a.base, #in~a.offset;call #t~mem4 := read~intINTTYPE4(~a.base, ~a.offset, 4bv32); {37#(= |mutex_lock_#t~mem4| (_ bv0 32))} is VALID [2022-02-20 16:49:31,404 INFO L290 TraceCheckUtils]: 4: Hoare triple {37#(= |mutex_lock_#t~mem4| (_ bv0 32))} assume 1bv32 == #t~mem4;havoc #t~mem4; {22#false} is VALID [2022-02-20 16:49:31,404 INFO L272 TraceCheckUtils]: 5: Hoare triple {22#false} call err(); {22#false} is VALID [2022-02-20 16:49:31,405 INFO L290 TraceCheckUtils]: 6: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-02-20 16:49:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:49:31,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:49:31,406 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:49:31,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994316617] [2022-02-20 16:49:31,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994316617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:49:31,407 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:49:31,407 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-20 16:49:31,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708596237] [2022-02-20 16:49:31,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:49:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:31,415 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:49:31,417 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:31,427 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:31,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-20 16:49:31,428 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:49:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-20 16:49:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-20 16:49:31,456 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 13 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:31,597 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-02-20 16:49:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-20 16:49:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:49:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:49:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:31,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-02-20 16:49:31,613 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 39 transitions. [2022-02-20 16:49:31,653 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 39 edges. 39 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:49:31,659 INFO L225 Difference]: With dead ends: 34 [2022-02-20 16:49:31,659 INFO L226 Difference]: Without dead ends: 14 [2022-02-20 16:49:31,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-02-20 16:49:31,665 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:49:31,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 43 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:49:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-02-20 16:49:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-02-20 16:49:31,692 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:49:31,693 INFO L82 GeneralOperation]: Start isEquivalent. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:31,693 INFO L74 IsIncluded]: Start isIncluded. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:31,693 INFO L87 Difference]: Start difference. First operand 14 states. Second operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:31,697 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:31,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:31,698 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:31,698 INFO L74 IsIncluded]: Start isIncluded. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:31,699 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 14 states. [2022-02-20 16:49:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:49:31,702 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2022-02-20 16:49:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:31,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:49:31,702 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:49:31,703 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:49:31,703 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:49:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-20 16:49:31,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-02-20 16:49:31,708 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 7 [2022-02-20 16:49:31,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:49:31,708 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-02-20 16:49:31,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:49:31,709 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-02-20 16:49:31,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-02-20 16:49:31,710 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:49:31,714 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:49:31,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:49:31,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:49:31,920 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errErr0ASSERT_VIOLATIONERROR_FUNCTION === [errErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:49:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:49:31,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1741455158, now seen corresponding path program 1 times [2022-02-20 16:49:31,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:49:31,922 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538274189] [2022-02-20 16:49:31,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:49:31,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:49:31,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:49:31,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:49:31,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:49:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:31,959 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:49:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:49:31,991 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 16:49:31,992 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:49:31,993 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:49:32,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-02-20 16:49:32,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:49:32,204 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:49:32,206 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:49:32,212 FATAL L489 DefaultTranslator]: Callstack has procedure call flag but succeeding procedure is empty at [CALL] call mutex_lock(~#m~0); [2022-02-20 16:49:32,213 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: callstack broken after backtranslation by InlinerBacktranslator at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:607) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-02-20 16:49:32,215 INFO L158 Benchmark]: Toolchain (without parser) took 1813.05ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 39.9MB in the end (delta: -4.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-02-20 16:49:32,215 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:32,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.69ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 55.7MB in the end (delta: -20.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2022-02-20 16:49:32,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.59ms. Allocated memory is still 71.3MB. Free memory was 55.5MB in the beginning and 54.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:32,216 INFO L158 Benchmark]: Boogie Preprocessor took 38.56ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 53.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:49:32,217 INFO L158 Benchmark]: RCFGBuilder took 290.66ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 44.3MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-02-20 16:49:32,217 INFO L158 Benchmark]: TraceAbstraction took 1253.29ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 39.9MB in the end (delta: 3.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2022-02-20 16:49:32,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 56.6MB. Free memory was 38.8MB in the beginning and 38.7MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 200.69ms. Allocated memory was 56.6MB in the beginning and 71.3MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 55.7MB in the end (delta: -20.2MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.59ms. Allocated memory is still 71.3MB. Free memory was 55.5MB in the beginning and 54.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.56ms. Allocated memory is still 71.3MB. Free memory was 54.1MB in the beginning and 53.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 290.66ms. Allocated memory is still 71.3MB. Free memory was 53.0MB in the beginning and 44.3MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1253.29ms. Allocated memory is still 71.3MB. Free memory was 43.7MB in the beginning and 39.9MB in the end (delta: 3.9MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: callstack broken after backtranslation by InlinerBacktranslator: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-02-20 16:49:32,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: callstack broken after backtranslation by InlinerBacktranslator