./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be --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 a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 ............................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:18:33,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:18:33,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:18:33,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:18:33,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:18:33,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:18:33,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:18:33,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:18:33,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:18:33,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:18:33,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:18:33,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:18:33,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:18:33,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:18:33,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:18:33,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:18:33,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:18:33,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:18:33,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:18:33,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:18:33,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:18:33,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:18:33,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:18:33,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:18:33,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:18:33,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:18:33,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:18:33,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:18:33,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:18:33,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:18:33,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:18:33,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:18:33,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:18:33,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:18:33,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:18:33,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:18:33,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:18:33,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:18:33,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:18:33,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:18:33,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:18:33,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:18:33,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:18:33,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:18:33,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:18:33,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:18:33,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:18:33,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:18:33,717 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:18:33,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:18:33,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:18:33,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:18:33,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:18:33,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:18:33,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:18:33,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:18:33,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:18:33,720 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:18:33,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:18:33,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:18:33,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:18:33,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:18:33,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:18:33,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:18:33,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:18:33,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:18:33,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:18:33,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:18:33,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:18:33,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:18:33,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:18:33,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:18:33,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:18:33,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:18:33,724 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7241ade69e14c61e98aa837796de568ecf31fbd07f5084e15c262d93cdb3376 [2021-10-21 20:18:34,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:18:34,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:18:34,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:18:34,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:18:34,059 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:18:34,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2021-10-21 20:18:34,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/data/40259c9ee/1f957a0f278e41de90dbdd5e45376a5b/FLAGb5a01e44a [2021-10-21 20:18:34,726 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:18:34,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/sv-benchmarks/c/recursive/McCarthy91-1.c [2021-10-21 20:18:34,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/data/40259c9ee/1f957a0f278e41de90dbdd5e45376a5b/FLAGb5a01e44a [2021-10-21 20:18:35,109 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/data/40259c9ee/1f957a0f278e41de90dbdd5e45376a5b [2021-10-21 20:18:35,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:18:35,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:18:35,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:18:35,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:18:35,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:18:35,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56954a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35, skipping insertion in model container [2021-10-21 20:18:35,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:18:35,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:18:35,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-10-21 20:18:35,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:18:35,436 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:18:35,452 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/sv-benchmarks/c/recursive/McCarthy91-1.c[749,762] [2021-10-21 20:18:35,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:18:35,468 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:18:35,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35 WrapperNode [2021-10-21 20:18:35,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:18:35,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:18:35,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:18:35,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:18:35,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:18:35,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:18:35,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:18:35,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:18:35,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:18:35,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:18:35,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:18:35,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:18:35,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (1/1) ... [2021-10-21 20:18:35,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:18:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:18:35,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:18:35,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:18:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:18:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:18:35,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:18:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:18:35,636 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2021-10-21 20:18:35,636 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2021-10-21 20:18:35,888 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:18:35,891 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:18:35,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:35 BoogieIcfgContainer [2021-10-21 20:18:35,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:18:35,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:18:35,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:18:35,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:18:35,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:18:35" (1/3) ... [2021-10-21 20:18:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:18:35, skipping insertion in model container [2021-10-21 20:18:35,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:35" (2/3) ... [2021-10-21 20:18:35,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a9ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:18:35, skipping insertion in model container [2021-10-21 20:18:35,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:35" (3/3) ... [2021-10-21 20:18:35,906 INFO L111 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2021-10-21 20:18:35,914 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:18:35,914 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-21 20:18:35,981 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:18:35,992 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 [2021-10-21 20:18:35,993 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-21 20:18:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-21 20:18:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:18:36,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:18:36,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:18:36,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:18:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:18:36,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1165457142, now seen corresponding path program 1 times [2021-10-21 20:18:36,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:18:36,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644883334] [2021-10-21 20:18:36,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:18:36,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:18:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:36,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:18:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:36,308 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:18:36,311 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 20:18:36,314 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:18:36,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:18:36,324 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:18:36,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:18:36 BoogieIcfgContainer [2021-10-21 20:18:36,362 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:18:36,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:18:36,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:18:36,366 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:18:36,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:35" (3/4) ... [2021-10-21 20:18:36,369 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 20:18:36,442 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:18:36,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:18:36,445 INFO L168 Benchmark]: Toolchain (without parser) took 1320.61 ms. Allocated memory is still 98.6 MB. Free memory was 63.6 MB in the beginning and 47.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,445 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 71.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:18:36,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.51 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 74.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,454 INFO L168 Benchmark]: Boogie Preprocessor took 39.88 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 72.3 MB in the end (delta: 465.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:18:36,455 INFO L168 Benchmark]: RCFGBuilder took 347.44 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,456 INFO L168 Benchmark]: TraceAbstraction took 464.79 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 48.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,456 INFO L168 Benchmark]: Witness Printer took 76.68 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:36,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 71.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.51 ms. Allocated memory is still 98.6 MB. Free memory was 63.4 MB in the beginning and 74.4 MB in the end (delta: -11.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.77 ms. Allocated memory is still 98.6 MB. Free memory was 74.4 MB in the beginning and 73.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.88 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 72.3 MB in the end (delta: 465.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 347.44 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 464.79 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 48.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 76.68 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 47.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 32]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L27] int x = __VERIFIER_nondet_int(); [L28] CALL, EXPR f91(x) VAL [\old(x)=102] [L18] COND TRUE x > 100 [L19] return x -10; VAL [\old(x)=102, \result=92, x=102] [L28] RET, EXPR f91(x) [L28] int result = f91(x); [L29] COND FALSE !(result == 91 || x > 102 && result == x - 10) [L32] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 343.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 20.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.7ms SsaConstructionTime, 71.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:18:36,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_677541e1-8a43-4f46-8245-f657bd978a36/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...