./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Pure3Phase-2.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_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/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_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Pure3Phase-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/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_987faac4-6805-4e83-bed2-7a9a1a905f39/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 65bf51258db9d1060ac04f6eb447a3edfae2476b23881e44c2b30493b7b492fc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:42:38,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:42:38,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:42:38,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:42:38,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:42:38,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:42:38,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:42:38,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:42:38,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:42:38,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:42:38,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:42:38,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:42:38,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:42:38,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:42:38,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:42:38,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:42:38,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:42:38,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:42:38,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:42:38,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:42:38,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:42:38,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:42:38,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:42:38,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:42:38,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:42:38,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:42:38,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:42:38,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:42:38,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:42:38,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:42:38,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:42:38,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:42:38,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:42:38,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:42:38,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:42:38,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:42:38,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:42:38,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:42:38,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:42:38,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:42:38,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:42:38,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 03:42:38,881 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:42:38,882 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:42:38,884 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:42:38,884 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:42:38,884 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:42:38,885 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:42:38,885 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:42:38,885 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:42:38,886 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:42:38,886 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:42:38,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:42:38,888 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:42:38,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:42:38,888 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:42:38,889 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:42:38,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:42:38,891 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 03:42:38,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:42:38,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:42:38,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:42:38,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:42:38,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:42:38,892 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 03:42:38,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:42:38,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:42:38,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:42:38,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:42:38,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:42:38,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:38,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:42:38,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:42:38,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:42:38,897 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:42:38,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:42:38,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:42:38,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:42:38,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:42:38,899 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_987faac4-6805-4e83-bed2-7a9a1a905f39/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65bf51258db9d1060ac04f6eb447a3edfae2476b23881e44c2b30493b7b492fc [2021-11-03 03:42:39,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:42:39,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:42:39,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:42:39,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:42:39,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:42:39,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted/Pure3Phase-2.c [2021-11-03 03:42:39,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/data/fc289b73d/f7f3ff17971548a0abaa53a3c64878f5/FLAGb0656998c [2021-11-03 03:42:39,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:42:39,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/sv-benchmarks/c/termination-crafted/Pure3Phase-2.c [2021-11-03 03:42:39,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/data/fc289b73d/f7f3ff17971548a0abaa53a3c64878f5/FLAGb0656998c [2021-11-03 03:42:40,245 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/data/fc289b73d/f7f3ff17971548a0abaa53a3c64878f5 [2021-11-03 03:42:40,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:42:40,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:42:40,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:40,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:42:40,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:42:40,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9cf1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40, skipping insertion in model container [2021-11-03 03:42:40,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:42:40,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:42:40,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:40,455 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:42:40,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:42:40,490 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:42:40,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40 WrapperNode [2021-11-03 03:42:40,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:42:40,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:40,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:42:40,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:42:40,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:42:40,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:42:40,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:42:40,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:42:40,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:42:40,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:42:40,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:42:40,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:42:40,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (1/1) ... [2021-11-03 03:42:40,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:42:40,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:42:40,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:42:40,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:42:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:42:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:42:40,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:42:40,987 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 03:42:40,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:40 BoogieIcfgContainer [2021-11-03 03:42:40,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:42:40,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:42:40,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:42:41,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:42:41,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:40" (1/3) ... [2021-11-03 03:42:41,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be43950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:41, skipping insertion in model container [2021-11-03 03:42:41,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:40" (2/3) ... [2021-11-03 03:42:41,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be43950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:42:41, skipping insertion in model container [2021-11-03 03:42:41,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:40" (3/3) ... [2021-11-03 03:42:41,015 INFO L111 eAbstractionObserver]: Analyzing ICFG Pure3Phase-2.c [2021-11-03 03:42:41,022 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:42:41,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-03 03:42:41,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:42:41,107 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 03:42:41,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-03 03:42:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 states have internal predecessors, (21), 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 03:42:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 03:42:41,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:42:41,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 03:42:41,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-11-03 03:42:41,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:42:41,155 INFO L85 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2021-11-03 03:42:41,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:42:41,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429029632] [2021-11-03 03:42:41,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:42:41,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:42:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:42:41,341 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:42:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:42:41,398 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:42:41,403 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:42:41,405 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,417 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,420 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,422 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,423 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,424 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,425 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 03:42:41,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:42:41,434 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-03 03:42:41,439 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:42:41,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:42:41 BoogieIcfgContainer [2021-11-03 03:42:41,458 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:42:41,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:42:41,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:42:41,464 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:42:41,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:42:40" (3/4) ... [2021-11-03 03:42:41,467 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 03:42:41,536 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 03:42:41,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:42:41,540 INFO L168 Benchmark]: Toolchain (without parser) took 1289.33 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.5 MB in the beginning and 66.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,542 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 61.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:41,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.62 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.3 MB in the beginning and 92.5 MB in the end (delta: -41.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,551 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 91.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:42:41,552 INFO L168 Benchmark]: Boogie Preprocessor took 20.79 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,554 INFO L168 Benchmark]: RCFGBuilder took 441.69 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 81.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,555 INFO L168 Benchmark]: TraceAbstraction took 465.01 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 68.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,555 INFO L168 Benchmark]: Witness Printer took 73.75 ms. Allocated memory is still 115.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:42:41,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 88.1 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 61.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.62 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 51.3 MB in the beginning and 92.5 MB in the end (delta: -41.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.60 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 91.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.79 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 441.69 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 81.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 465.01 ms. Allocated memory is still 115.3 MB. Free memory was 80.7 MB in the beginning and 68.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 73.75 ms. Allocated memory is still 115.3 MB. Free memory was 68.5 MB in the beginning and 66.8 MB in the end (delta: 1.7 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: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L19] int x, y, z; [L20] x = __VERIFIER_nondet_int() [L21] y = __VERIFIER_nondet_int() [L22] z = __VERIFIER_nondet_int() [L23] COND TRUE x >= 0 [L24] COND FALSE !(__VERIFIER_nondet_int() != 0) [L27] x + 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: 27]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 29]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 30]: 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, 20 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 NumberOfCodeBlocks, 4 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 03:42:41,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_987faac4-6805-4e83-bed2-7a9a1a905f39/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)