./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex4.01.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_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/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_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex4.01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/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_8df51d32-c30c-4397-84e5-acb0cad0eaf1/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 56fc872e209061c8636a1fd550703ac1fc28da43 .......................................................................................................................................................................................................................................... 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 02:30:51,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:51,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:51,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:51,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:51,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:51,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:51,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:51,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:51,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:51,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:51,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:51,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:51,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:51,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:51,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:51,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:51,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:51,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:51,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:51,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:51,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:51,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:51,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:51,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:51,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:51,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:51,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:51,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:51,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:51,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:51,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:51,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:51,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:51,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:51,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:51,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:51,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:51,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:51,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:51,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:51,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:30:51,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:51,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:51,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:51,848 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:51,848 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:51,849 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:51,849 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:51,850 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:51,850 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:51,850 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:51,857 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:51,858 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:51,858 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:51,858 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:51,859 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:51,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:51,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:30:51,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:51,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:51,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:51,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:51,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:51,862 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:30:51,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:51,862 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:51,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:51,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:51,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:51,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:51,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:51,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:51,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:51,866 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:51,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:51,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:51,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:51,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:51,867 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_8df51d32-c30c-4397-84e5-acb0cad0eaf1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56fc872e209061c8636a1fd550703ac1fc28da43 [2021-10-11 02:30:52,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:52,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:52,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:52,229 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:52,230 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:52,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex4.01.c [2021-10-11 02:30:52,335 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/data/252fc05c8/641de608214a4296b95af91db2fb1ebd/FLAGe2aecba3d [2021-10-11 02:30:52,712 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:52,713 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex4.01.c [2021-10-11 02:30:52,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/data/252fc05c8/641de608214a4296b95af91db2fb1ebd/FLAGe2aecba3d [2021-10-11 02:30:53,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/data/252fc05c8/641de608214a4296b95af91db2fb1ebd [2021-10-11 02:30:53,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:53,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:53,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:53,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:53,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:53,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0ef81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53, skipping insertion in model container [2021-10-11 02:30:53,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:53,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:53,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:53,287 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:53,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:53,312 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:53,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53 WrapperNode [2021-10-11 02:30:53,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:53,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:53,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:53,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:53,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:53,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:53,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:53,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:53,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... [2021-10-11 02:30:53,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:53,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:53,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:53,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:53,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/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 02:30:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:53,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:53,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:53,807 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:30:53,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:53 BoogieIcfgContainer [2021-10-11 02:30:53,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:53,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:53,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:53,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:53,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:53" (1/3) ... [2021-10-11 02:30:53,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30f539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:53, skipping insertion in model container [2021-10-11 02:30:53,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:53" (2/3) ... [2021-10-11 02:30:53,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d30f539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:53, skipping insertion in model container [2021-10-11 02:30:53,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:53" (3/3) ... [2021-10-11 02:30:53,831 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex4.01.c [2021-10-11 02:30:53,845 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:53,856 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2021-10-11 02:30:53,866 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-11 02:30:53,899 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:53,900 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:53,900 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:53,900 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:53,900 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:53,900 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:53,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:53,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:53,917 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-10-11 02:30:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:30:53,925 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:53,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:30:53,926 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:30:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2021-10-11 02:30:53,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:53,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488455581] [2021-10-11 02:30:53,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:54,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:54,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:54,050 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:30:54,051 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:30:54,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:54,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:54 BoogieIcfgContainer [2021-10-11 02:30:54,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:54,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:54,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:54,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:54,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:53" (3/4) ... [2021-10-11 02:30:54,070 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:30:54,103 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8df51d32-c30c-4397-84e5-acb0cad0eaf1/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:54,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:54,106 INFO L168 Benchmark]: Toolchain (without parser) took 985.28 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 42.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:54,107 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:54,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 69.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:54,108 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:54,109 INFO L168 Benchmark]: Boogie Preprocessor took 18.35 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 67.6 MB in the end (delta: 789.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:54,109 INFO L168 Benchmark]: RCFGBuilder took 446.39 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 56.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:54,110 INFO L168 Benchmark]: TraceAbstraction took 243.61 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 44.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:54,111 INFO L168 Benchmark]: Witness Printer took 36.02 ms. Allocated memory is still 92.3 MB. Free memory was 44.5 MB in the beginning and 42.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:54,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.13 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 69.7 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.73 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.35 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 67.6 MB in the end (delta: 789.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.39 ms. Allocated memory is still 92.3 MB. Free memory was 67.2 MB in the beginning and 56.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 243.61 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 44.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 36.02 ms. Allocated memory is still 92.3 MB. Free memory was 44.5 MB in the beginning and 42.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z, n; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] n = __VERIFIER_nondet_int() [L28] x + y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=20occurred 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, 2 NumberOfCodeBlocks, 2 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...