./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0dc4638329f6bf3c2f87e6e34ebc8b8484b48fb2 .......................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:50,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:50,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:50,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:50,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:50,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:50,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:50,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:50,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:50,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:50,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:50,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:50,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:50,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:50,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:50,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:50,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:50,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:50,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:50,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:50,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:50,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:50,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:50,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:50,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:50,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:50,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:50,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:50,770 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:50,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:50,772 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:50,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:50,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:50,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:50,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:50,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:50,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:50,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:50,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:50,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:50,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:50,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:24:50,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:50,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:50,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:50,827 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:50,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:50,828 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:50,828 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:50,828 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:50,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:50,829 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:50,830 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:50,830 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:50,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:50,831 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:50,831 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:50,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:50,832 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:24:50,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:50,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:50,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:50,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:50,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:50,833 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:24:50,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:50,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:50,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:50,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:50,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:50,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:50,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:50,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:50,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:50,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:50,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:50,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:50,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:50,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:50,839 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dc4638329f6bf3c2f87e6e34ebc8b8484b48fb2 [2021-10-11 02:24:51,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:51,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:51,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:51,194 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:51,196 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:51,197 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted/4NestedWith3Variables-2.c [2021-10-11 02:24:51,300 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/data/da848211a/0abf3876160343af8a58cedfe3585efe/FLAGe92f25994 [2021-10-11 02:24:51,824 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:51,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/sv-benchmarks/c/termination-crafted/4NestedWith3Variables-2.c [2021-10-11 02:24:51,833 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/data/da848211a/0abf3876160343af8a58cedfe3585efe/FLAGe92f25994 [2021-10-11 02:24:52,194 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/data/da848211a/0abf3876160343af8a58cedfe3585efe [2021-10-11 02:24:52,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:52,201 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:52,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:52,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:52,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:52,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fa38de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52, skipping insertion in model container [2021-10-11 02:24:52,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:52,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:52,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:52,424 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:52,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:52,478 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:52,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52 WrapperNode [2021-10-11 02:24:52,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:52,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:52,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:52,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:52,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:52,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:52,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:52,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:52,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... [2021-10-11 02:24:52,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:52,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:52,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:52,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:52,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:52,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:52,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:53,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:53,026 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:24:53,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:53 BoogieIcfgContainer [2021-10-11 02:24:53,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:53,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:53,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:53,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:53,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:52" (1/3) ... [2021-10-11 02:24:53,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:53, skipping insertion in model container [2021-10-11 02:24:53,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:52" (2/3) ... [2021-10-11 02:24:53,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51f4a17d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:53, skipping insertion in model container [2021-10-11 02:24:53,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:53" (3/3) ... [2021-10-11 02:24:53,046 INFO L111 eAbstractionObserver]: Analyzing ICFG 4NestedWith3Variables-2.c [2021-10-11 02:24:53,076 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:53,099 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2021-10-11 02:24:53,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-11 02:24:53,145 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:53,160 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:53,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:53,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:53,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:53,161 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:53,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:53,162 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-10-11 02:24:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:24:53,187 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:53,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:24:53,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:24:53,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:53,197 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 02:24:53,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:53,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882786178] [2021-10-11 02:24:53,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:53,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:53,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:53,400 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:53,401 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:53,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:53,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:53 BoogieIcfgContainer [2021-10-11 02:24:53,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:53,422 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:53,422 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:53,423 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:53,423 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:53" (3/4) ... [2021-10-11 02:24:53,426 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:53,492 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_147a935b-d66e-42a1-9743-7b2846fe1b35/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:53,493 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:53,498 INFO L168 Benchmark]: Toolchain (without parser) took 1292.99 ms. Allocated memory is still 159.4 MB. Free memory was 126.8 MB in the beginning and 105.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:53,500 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 34.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:53,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.44 ms. Allocated memory is still 159.4 MB. Free memory was 126.8 MB in the beginning and 134.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:53,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.46 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 133.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:53,509 INFO L168 Benchmark]: Boogie Preprocessor took 18.74 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 132.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:53,511 INFO L168 Benchmark]: RCFGBuilder took 478.82 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 118.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:53,512 INFO L168 Benchmark]: TraceAbstraction took 390.49 ms. Allocated memory is still 159.4 MB. Free memory was 118.0 MB in the beginning and 107.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:53,514 INFO L168 Benchmark]: Witness Printer took 70.78 ms. Allocated memory is still 159.4 MB. Free memory was 107.1 MB in the beginning and 105.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:53,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 46.5 MB in the beginning and 46.5 MB in the end (delta: 34.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.44 ms. Allocated memory is still 159.4 MB. Free memory was 126.8 MB in the beginning and 134.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.46 ms. Allocated memory is still 159.4 MB. Free memory was 134.6 MB in the beginning and 133.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.74 ms. Allocated memory is still 159.4 MB. Free memory was 133.4 MB in the beginning and 132.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 478.82 ms. Allocated memory is still 159.4 MB. Free memory was 132.2 MB in the beginning and 118.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 390.49 ms. Allocated memory is still 159.4 MB. Free memory was 118.0 MB in the beginning and 107.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 70.78 ms. Allocated memory is still 159.4 MB. Free memory was 107.1 MB in the beginning and 105.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 23]: integer overflow possible integer overflow possible We found a FailurePath: [L18] int a, b, q, olda; [L19] q = __VERIFIER_nondet_int() [L20] a = __VERIFIER_nondet_int() [L21] b = __VERIFIER_nondet_int() [L22] COND TRUE q > 0 [L23] q + a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=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! Received shutdown request...