./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 07:30:13,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 07:30:13,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 07:30:13,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 07:30:13,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 07:30:13,988 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 07:30:13,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 07:30:13,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 07:30:13,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 07:30:14,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 07:30:14,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 07:30:14,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 07:30:14,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 07:30:14,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 07:30:14,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 07:30:14,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 07:30:14,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 07:30:14,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 07:30:14,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 07:30:14,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 07:30:14,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 07:30:14,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 07:30:14,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 07:30:14,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 07:30:14,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 07:30:14,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 07:30:14,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 07:30:14,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 07:30:14,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 07:30:14,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 07:30:14,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 07:30:14,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 07:30:14,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 07:30:14,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 07:30:14,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 07:30:14,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 07:30:14,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 07:30:14,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 07:30:14,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 07:30:14,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 07:30:14,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 07:30:14,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-25 07:30:14,105 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 07:30:14,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 07:30:14,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 07:30:14,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-25 07:30:14,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-25 07:30:14,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-25 07:30:14,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 07:30:14,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 07:30:14,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 07:30:14,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 07:30:14,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 07:30:14,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 07:30:14,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 07:30:14,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 07:30:14,117 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 07:30:14,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 07:30:14,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 07:30:14,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 07:30:14,118 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-25 07:30:14,118 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-25 07:30:14,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 07:30:14,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:30:14,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 07:30:14,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 07:30:14,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 07:30:14,120 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-25 07:30:14,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 07:30:14,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 07:30:14,121 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_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 [2021-11-25 07:30:14,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 07:30:14,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 07:30:14,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 07:30:14,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 07:30:14,471 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 07:30:14,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/../../sv-benchmarks/c/loop-simple/nested_1b.c [2021-11-25 07:30:14,558 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/data/c10115581/ec6ae0e5911947d5bffb421f6a082698/FLAG5d6dd3e0f [2021-11-25 07:30:15,034 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 07:30:15,038 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/sv-benchmarks/c/loop-simple/nested_1b.c [2021-11-25 07:30:15,050 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/data/c10115581/ec6ae0e5911947d5bffb421f6a082698/FLAG5d6dd3e0f [2021-11-25 07:30:15,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/data/c10115581/ec6ae0e5911947d5bffb421f6a082698 [2021-11-25 07:30:15,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 07:30:15,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 07:30:15,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 07:30:15,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 07:30:15,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 07:30:15,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531ea75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15, skipping insertion in model container [2021-11-25 07:30:15,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 07:30:15,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 07:30:15,571 WARN L230 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_4642cc4b-8d2d-421f-be9d-20ea8c708450/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2021-11-25 07:30:15,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:30:15,586 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 07:30:15,607 WARN L230 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_4642cc4b-8d2d-421f-be9d-20ea8c708450/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2021-11-25 07:30:15,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 07:30:15,621 INFO L208 MainTranslator]: Completed translation [2021-11-25 07:30:15,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15 WrapperNode [2021-11-25 07:30:15,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 07:30:15,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 07:30:15,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 07:30:15,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 07:30:15,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,647 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-25 07:30:15,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 07:30:15,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 07:30:15,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 07:30:15,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 07:30:15,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 07:30:15,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 07:30:15,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 07:30:15,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 07:30:15,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-25 07:30:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/z3 [2021-11-25 07:30:15,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-25 07:30:15,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-25 07:30:15,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 07:30:15,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 07:30:15,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 07:30:15,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 07:30:15,803 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 07:30:15,804 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 07:30:15,873 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 07:30:15,887 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 07:30:15,887 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 07:30:15,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:30:15 BoogieIcfgContainer [2021-11-25 07:30:15,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 07:30:15,891 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-25 07:30:15,891 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-25 07:30:15,901 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-25 07:30:15,902 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:30:15" (1/1) ... [2021-11-25 07:30:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 07:30:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:15,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2021-11-25 07:30:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2021-11-25 07:30:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 07:30:15,972 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:15,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2021-11-25 07:30:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2021-11-25 07:30:16,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 07:30:16,210 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2021-11-25 07:30:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-25 07:30:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 07:30:16,305 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2021-11-25 07:30:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-25 07:30:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 07:30:16,433 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2021-11-25 07:30:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-25 07:30:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 07:30:16,553 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2021-11-25 07:30:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-11-25 07:30:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 07:30:16,686 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 07:30:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 07:30:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-25 07:30:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2021-11-25 07:30:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-25 07:30:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 07:30:16,846 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-25 07:30:16,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 07:30:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:30:16,881 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:30:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:30:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:30:16,939 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 07:30:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 07:30:16,955 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2021-11-25 07:30:16,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 25.11 07:30:16 ImpRootNode [2021-11-25 07:30:16,981 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-25 07:30:16,982 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 07:30:16,982 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 07:30:16,982 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 07:30:16,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:30:15" (3/4) ... [2021-11-25 07:30:16,985 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 07:30:17,018 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/witness.graphml [2021-11-25 07:30:17,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 07:30:17,019 INFO L158 Benchmark]: Toolchain (without parser) took 1625.93ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 50.5MB in the beginning and 36.1MB in the end (delta: 14.4MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2021-11-25 07:30:17,020 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:30:17,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.76ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 84.7MB in the end (delta: -34.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-11-25 07:30:17,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.89ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:30:17,022 INFO L158 Benchmark]: Boogie Preprocessor took 17.25ms. Allocated memory is still 107.0MB. Free memory was 83.1MB in the beginning and 82.2MB in the end (delta: 870.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 07:30:17,023 INFO L158 Benchmark]: RCFGBuilder took 223.83ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 73.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 07:30:17,023 INFO L158 Benchmark]: CodeCheck took 1090.27ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 37.6MB in the end (delta: 35.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2021-11-25 07:30:17,024 INFO L158 Benchmark]: Witness Printer took 36.60ms. Allocated memory is still 107.0MB. Free memory was 37.6MB in the beginning and 36.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 07:30:17,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 18 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 255 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 VAL [a=0] [L19] COND TRUE a < 6 [L19] ++a VAL [a=1] [L19] COND TRUE a < 6 [L19] ++a VAL [a=2] [L19] COND TRUE a < 6 [L19] ++a VAL [a=3] [L19] COND TRUE a < 6 [L19] ++a VAL [a=4] [L19] COND TRUE a < 6 [L19] ++a VAL [a=5] [L19] COND TRUE a < 6 [L19] ++a VAL [a=6] [L19] COND FALSE !(a < 6) VAL [a=6] [L22] COND TRUE a == 6 VAL [a=6] [L23] reach_error() VAL [a=6] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.76ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 50.3MB in the beginning and 84.7MB in the end (delta: -34.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.89ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.25ms. Allocated memory is still 107.0MB. Free memory was 83.1MB in the beginning and 82.2MB in the end (delta: 870.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.83ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 73.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 1090.27ms. Allocated memory is still 107.0MB. Free memory was 73.4MB in the beginning and 37.6MB in the end (delta: 35.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Witness Printer took 36.60ms. Allocated memory is still 107.0MB. Free memory was 37.6MB in the beginning and 36.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2021-11-25 07:30:17,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4642cc4b-8d2d-421f-be9d-20ea8c708450/bin/ukojak-d1pc8ZmBRL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE