./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/for_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/for_infinite_loop_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY --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 e54633c21138b76e0a20540e3354416071759709 ............................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 05:10:54,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 05:10:54,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 05:10:54,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 05:10:54,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 05:10:54,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 05:10:54,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 05:10:54,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 05:10:54,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 05:10:54,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 05:10:54,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 05:10:54,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 05:10:54,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 05:10:54,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 05:10:54,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 05:10:54,903 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 05:10:54,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 05:10:54,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 05:10:54,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 05:10:54,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 05:10:54,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 05:10:54,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 05:10:54,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 05:10:54,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 05:10:54,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 05:10:54,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 05:10:54,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 05:10:54,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 05:10:54,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 05:10:54,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 05:10:54,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 05:10:54,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 05:10:54,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 05:10:54,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 05:10:54,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 05:10:54,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 05:10:54,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 05:10:54,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 05:10:54,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 05:10:54,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 05:10:54,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 05:10:54,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-13 05:10:54,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 05:10:54,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 05:10:54,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 05:10:54,964 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 05:10:54,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 05:10:54,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 05:10:54,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 05:10:54,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 05:10:54,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 05:10:54,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 05:10:54,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 05:10:54,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 05:10:54,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 05:10:54,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 05:10:54,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 05:10:54,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 05:10:54,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 05:10:54,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 05:10:54,968 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 05:10:54,969 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 05:10:54,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 05:10:54,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 05:10:54,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 05:10:54,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 05:10:54,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 05:10:54,970 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 05:10:54,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 05:10:54,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 05:10:54,971 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_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e54633c21138b76e0a20540e3354416071759709 [2021-10-13 05:10:55,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 05:10:55,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 05:10:55,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 05:10:55,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 05:10:55,301 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 05:10:55,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/loops/for_infinite_loop_2.c [2021-10-13 05:10:55,388 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/data/1d19055be/9bfbe1c2e0b0417e931c816e799dee68/FLAGcb0de6fc4 [2021-10-13 05:10:55,821 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 05:10:55,822 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/sv-benchmarks/c/loops/for_infinite_loop_2.c [2021-10-13 05:10:55,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/data/1d19055be/9bfbe1c2e0b0417e931c816e799dee68/FLAGcb0de6fc4 [2021-10-13 05:10:55,844 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/data/1d19055be/9bfbe1c2e0b0417e931c816e799dee68 [2021-10-13 05:10:55,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 05:10:55,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 05:10:55,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 05:10:55,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 05:10:55,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 05:10:55,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:55" (1/1) ... [2021-10-13 05:10:55,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10457442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:55, skipping insertion in model container [2021-10-13 05:10:55,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:10:55" (1/1) ... [2021-10-13 05:10:55,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 05:10:55,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 05:10:55,999 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_e42c5c58-da3e-4505-bfb5-5bed40f028eb/sv-benchmarks/c/loops/for_infinite_loop_2.c[418,431] [2021-10-13 05:10:56,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 05:10:56,020 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 05:10:56,033 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_e42c5c58-da3e-4505-bfb5-5bed40f028eb/sv-benchmarks/c/loops/for_infinite_loop_2.c[418,431] [2021-10-13 05:10:56,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 05:10:56,050 INFO L208 MainTranslator]: Completed translation [2021-10-13 05:10:56,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56 WrapperNode [2021-10-13 05:10:56,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 05:10:56,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 05:10:56,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 05:10:56,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 05:10:56,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,082 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 05:10:56,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 05:10:56,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 05:10:56,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 05:10:56,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 05:10:56,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 05:10:56,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 05:10:56,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 05:10:56,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 05:10:56,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/z3 [2021-10-13 05:10:56,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 05:10:56,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 05:10:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 05:10:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 05:10:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 05:10:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 05:10:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-13 05:10:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-13 05:10:56,546 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 05:10:56,547 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 05:10:56,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:56 BoogieIcfgContainer [2021-10-13 05:10:56,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 05:10:56,562 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 05:10:56,562 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 05:10:56,571 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 05:10:56,571 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:56" (1/1) ... [2021-10-13 05:10:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 05:10:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:10:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2021-10-13 05:10:56,623 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-13 05:10:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 05:10:56,627 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:10:56,629 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:10:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:10:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:10:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:10:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 13 transitions. [2021-10-13 05:10:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 05:10:56,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 05:10:56,755 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:10:56,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:10:56,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:10:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:10:56,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:10:56,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 17 states and 17 transitions. [2021-10-13 05:10:56,884 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 05:10:56,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 05:10:56,885 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 05:10:56,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 05:10:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 05:10:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 05:10:57,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 05:10:57,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 11 transitions. [2021-10-13 05:10:57,041 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-13 05:10:57,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 05:10:57,042 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 4 iterations. [2021-10-13 05:10:57,049 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-13 05:10:57,076 INFO L565 CodeCheckObserver]: Invariant with dag size 3 [2021-10-13 05:10:57,087 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-13 05:10:57,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 05:10:57 ImpRootNode [2021-10-13 05:10:57,087 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 05:10:57,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 05:10:57,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 05:10:57,089 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 05:10:57,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:10:56" (3/4) ... [2021-10-13 05:10:57,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 05:10:57,106 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-10-13 05:10:57,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-13 05:10:57,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 05:10:57,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 05:10:57,110 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 05:10:57,150 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 05:10:57,150 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 05:10:57,153 INFO L168 Benchmark]: Toolchain (without parser) took 1303.94 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 43.0 MB in the beginning and 54.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,153 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:10:57,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.67 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 42.8 MB in the beginning and 77.0 MB in the end (delta: -34.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,155 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.66 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,155 INFO L168 Benchmark]: Boogie Preprocessor took 19.75 ms. Allocated memory is still 104.9 MB. Free memory was 75.7 MB in the beginning and 74.8 MB in the end (delta: 939.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 05:10:57,156 INFO L168 Benchmark]: RCFGBuilder took 456.80 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 78.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,157 INFO L168 Benchmark]: CodeCheck took 526.17 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 56.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,157 INFO L168 Benchmark]: Witness Printer took 62.36 ms. Allocated memory is still 104.9 MB. Free memory was 56.7 MB in the beginning and 54.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 05:10:57,161 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 443.7ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 92 SDtfs, 26 SDslu, 32 SDs, 0 SdLazy, 68 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 111.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 11.2ms SsaConstructionTime, 50.9ms SatisfiabilityAnalysisTime, 163.5ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, 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: No data available, ReuseStatistics: No data available - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 59.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 201.67 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 42.8 MB in the beginning and 77.0 MB in the end (delta: -34.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.66 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 75.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.75 ms. Allocated memory is still 104.9 MB. Free memory was 75.7 MB in the beginning and 74.8 MB in the end (delta: 939.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 456.80 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 78.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 526.17 ms. Allocated memory is still 104.9 MB. Free memory was 78.1 MB in the beginning and 56.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 62.36 ms. Allocated memory is still 104.9 MB. Free memory was 56.7 MB in the beginning and 54.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! [2021-10-13 05:10:57,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e42c5c58-da3e-4505-bfb5-5bed40f028eb/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...