./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH --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 50c2a4f406424d65904ba40ec790dc114f39d6abc918ad66421c40b270e298fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:13:07,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:13:07,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:13:07,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:13:07,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:13:07,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:13:07,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:13:07,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:13:07,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:13:07,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:13:07,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:13:07,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:13:07,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:13:07,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:13:07,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:13:07,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:13:07,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:13:07,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:13:07,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:13:07,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:13:07,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:13:07,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:13:07,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:13:07,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:13:07,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:13:07,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:13:07,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:13:07,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:13:07,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:13:07,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:13:07,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:13:07,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:13:07,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:13:07,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:13:07,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:13:07,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:13:07,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:13:07,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:13:07,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:13:07,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:13:07,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:13:07,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:13:07,883 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:13:07,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:13:07,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:13:07,885 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:13:07,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:13:07,886 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:13:07,887 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:13:07,887 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:13:07,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:13:07,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:13:07,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:13:07,889 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:13:07,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:13:07,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:13:07,890 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:13:07,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:13:07,892 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:13:07,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:13:07,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:13:07,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:13:07,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:13:07,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:13:07,895 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:13:07,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:13:07,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:13:07,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:13:07,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:13:07,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:13:07,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:07,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:13:07,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:13:07,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:13:07,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:13:07,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:13:07,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:13:07,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:13:07,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:13:07,901 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_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50c2a4f406424d65904ba40ec790dc114f39d6abc918ad66421c40b270e298fa [2021-11-03 04:13:08,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:13:08,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:13:08,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:13:08,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:13:08,240 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:13:08,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex7.c [2021-11-03 04:13:08,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/data/c9b7e6a65/a21556367e2c4456b7c5badd97827e58/FLAG30f4128a2 [2021-11-03 04:13:08,988 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:08,989 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex7.c [2021-11-03 04:13:08,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/data/c9b7e6a65/a21556367e2c4456b7c5badd97827e58/FLAG30f4128a2 [2021-11-03 04:13:09,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/data/c9b7e6a65/a21556367e2c4456b7c5badd97827e58 [2021-11-03 04:13:09,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:09,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:09,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:09,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:09,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:09,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1596b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09, skipping insertion in model container [2021-11-03 04:13:09,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:09,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:09,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:09,681 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:09,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:09,743 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:09,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09 WrapperNode [2021-11-03 04:13:09,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:09,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:09,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:09,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:09,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:09,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:09,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:09,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:09,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:09,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:09,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:09,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:09,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (1/1) ... [2021-11-03 04:13:09,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:09,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:09,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:09,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:09,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:10,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:10,236 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 04:13:10,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:10 BoogieIcfgContainer [2021-11-03 04:13:10,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:10,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:10,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:10,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:10,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:09" (1/3) ... [2021-11-03 04:13:10,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110d2a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:10, skipping insertion in model container [2021-11-03 04:13:10,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:09" (2/3) ... [2021-11-03 04:13:10,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110d2a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:10, skipping insertion in model container [2021-11-03 04:13:10,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:10" (3/3) ... [2021-11-03 04:13:10,263 INFO L111 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex7.c [2021-11-03 04:13:10,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:10,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:13:10,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:10,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:13:10,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:13:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 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) [2021-11-03 04:13:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-03 04:13:10,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:10,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-03 04:13:10,393 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:13:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-11-03 04:13:10,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:13:10,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886517562] [2021-11-03 04:13:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:10,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:13:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:13:10,534 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:13:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:13:10,561 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:13:10,563 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:13:10,564 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,568 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:13:10,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:13:10,574 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 04:13:10,579 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:13:10,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:13:10 BoogieIcfgContainer [2021-11-03 04:13:10,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:13:10,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:13:10,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:13:10,594 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:13:10,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:10" (3/4) ... [2021-11-03 04:13:10,597 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 04:13:10,633 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:13:10,633 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:13:10,635 INFO L168 Benchmark]: Toolchain (without parser) took 1239.22 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 47.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:10,636 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:10,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.83 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 71.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:10,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:10,638 INFO L168 Benchmark]: Boogie Preprocessor took 28.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.7 MB in the end (delta: 988.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:13:10,639 INFO L168 Benchmark]: RCFGBuilder took 420.61 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 61.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:10,640 INFO L168 Benchmark]: TraceAbstraction took 351.07 ms. Allocated memory is still 94.4 MB. Free memory was 60.7 MB in the beginning and 49.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:10,640 INFO L168 Benchmark]: Witness Printer took 40.04 ms. Allocated memory is still 94.4 MB. Free memory was 48.8 MB in the beginning and 47.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:13:10,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.83 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 71.9 MB in the end (delta: -8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 70.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.7 MB in the beginning and 69.7 MB in the end (delta: 988.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.61 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 61.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 351.07 ms. Allocated memory is still 94.4 MB. Free memory was 60.7 MB in the beginning and 49.0 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 40.04 ms. Allocated memory is still 94.4 MB. Free memory was 48.8 MB in the beginning and 47.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L21] int q, z; [L22] q = __VERIFIER_nondet_int() [L23] z = __VERIFIER_nondet_int() [L24] COND TRUE q > 0 [L25] q + z - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 25]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: 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, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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! [2021-11-03 04:13:10,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9371f14-3f9b-4e88-81c3-d2ca1b0c111c/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)