./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Singapore_v1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Singapore_v1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 89577b6be281efce15ceec83f9a414e155357b73d2272de91ea0be126834f2bb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:52:15,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:52:15,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:52:15,861 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:52:15,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:52:15,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:52:15,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:52:15,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:52:15,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:52:15,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:52:15,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:52:15,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:52:15,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:52:15,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:52:15,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:52:15,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:52:15,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:52:15,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:52:15,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:52:15,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:52:15,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:52:15,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:52:15,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:52:15,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:52:15,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:52:15,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:52:15,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:52:15,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:52:15,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:52:15,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:52:15,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:52:15,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:52:15,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:52:15,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:52:15,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:52:15,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:52:15,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:52:15,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:52:15,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:52:15,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:52:15,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:52:15,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-10-17 10:52:16,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:52:16,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:52:16,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:52:16,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:52:16,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:52:16,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:52:16,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:52:16,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:52:16,014 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:52:16,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:52:16,015 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:52:16,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:52:16,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:52:16,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:52:16,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:52:16,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:52:16,016 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 10:52:16,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:52:16,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:52:16,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:52:16,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:52:16,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:52:16,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:52:16,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:16,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:52:16,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:52:16,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:52:16,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:52:16,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:52:16,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:52:16,021 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_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89577b6be281efce15ceec83f9a414e155357b73d2272de91ea0be126834f2bb [2022-10-17 10:52:16,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:52:16,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:52:16,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:52:16,373 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:52:16,374 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:52:16,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted/Singapore_v1.c [2022-10-17 10:52:16,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/data/97563fa89/efec8da487354d3cb7ad5e52ff080daf/FLAGc991ece02 [2022-10-17 10:52:17,073 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:52:17,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/sv-benchmarks/c/termination-crafted/Singapore_v1.c [2022-10-17 10:52:17,084 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/data/97563fa89/efec8da487354d3cb7ad5e52ff080daf/FLAGc991ece02 [2022-10-17 10:52:17,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/data/97563fa89/efec8da487354d3cb7ad5e52ff080daf [2022-10-17 10:52:17,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:52:17,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:52:17,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:17,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:52:17,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:52:17,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48551c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17, skipping insertion in model container [2022-10-17 10:52:17,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:52:17,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:52:17,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:17,718 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:52:17,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:17,754 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:52:17,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17 WrapperNode [2022-10-17 10:52:17,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:17,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:17,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:52:17,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:52:17,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,800 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-10-17 10:52:17,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:17,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:52:17,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:52:17,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:52:17,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,823 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:52:17,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:52:17,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:52:17,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:52:17,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (1/1) ... [2022-10-17 10:52:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:17,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:17,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:52:17,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:52:17,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:52:17,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:52:18,016 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:52:18,018 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:52:18,141 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:52:18,149 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:52:18,149 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:52:18,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:18 BoogieIcfgContainer [2022-10-17 10:52:18,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:52:18,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:52:18,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:52:18,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:52:18,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:52:17" (1/3) ... [2022-10-17 10:52:18,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338fb678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:18, skipping insertion in model container [2022-10-17 10:52:18,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:17" (2/3) ... [2022-10-17 10:52:18,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338fb678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:18, skipping insertion in model container [2022-10-17 10:52:18,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:18" (3/3) ... [2022-10-17 10:52:18,163 INFO L112 eAbstractionObserver]: Analyzing ICFG Singapore_v1.c [2022-10-17 10:52:18,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:52:18,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-10-17 10:52:18,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:52:18,257 INFO L357 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=FINITE_AUTOMATA, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43fbca9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:52:18,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-10-17 10:52:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:52:18,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:18,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:52:18,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-10-17 10:52:18,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:18,280 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2022-10-17 10:52:18,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90569704] [2022-10-17 10:52:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:52:18,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:52:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:52:18,481 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:52:18,483 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:52:18,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-10-17 10:52:18,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-10-17 10:52:18,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-10-17 10:52:18,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-10-17 10:52:18,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-10-17 10:52:18,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-10-17 10:52:18,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-10-17 10:52:18,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-10-17 10:52:18,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:52:18,498 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-17 10:52:18,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:52:18,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:52:18 BoogieIcfgContainer [2022-10-17 10:52:18,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:52:18,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:52:18,526 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:52:18,526 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:52:18,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:18" (3/4) ... [2022-10-17 10:52:18,529 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 10:52:18,568 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:52:18,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:52:18,570 INFO L158 Benchmark]: Toolchain (without parser) took 1112.02ms. Allocated memory is still 90.2MB. Free memory was 50.3MB in the beginning and 62.3MB in the end (delta: -12.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:52:18,571 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:52:18,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.89ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 67.6MB in the end (delta: -17.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-10-17 10:52:18,573 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.13ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:52:18,574 INFO L158 Benchmark]: Boogie Preprocessor took 24.14ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.2MB in the end (delta: 980.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:52:18,575 INFO L158 Benchmark]: RCFGBuilder took 325.46ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 55.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:52:18,576 INFO L158 Benchmark]: TraceAbstraction took 370.48ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 63.8MB in the end (delta: -8.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:52:18,577 INFO L158 Benchmark]: Witness Printer took 43.06ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 62.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:52:18,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 90.2MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.89ms. Allocated memory is still 90.2MB. Free memory was 50.1MB in the beginning and 67.6MB in the end (delta: -17.5MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.13ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 66.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.14ms. Allocated memory is still 90.2MB. Free memory was 66.2MB in the beginning and 65.2MB in the end (delta: 980.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.46ms. Allocated memory is still 90.2MB. Free memory was 65.2MB in the beginning and 55.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 370.48ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 63.8MB in the end (delta: -8.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.06ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 62.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] x + y VAL [x=1, y=2147483647] - UnprovableResult [Line: 16]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 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! [2022-10-17 10:52:18,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcdee60a-1d2c-411b-afd6-1098327b9789/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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(OVERFLOW)