./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8 --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 ca00060f6868fe060def9860574e7b5e9fff4bf1 ....................................................................................................................................................................................................................................... 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 0.2.1-dev-4e77c04 [2021-10-13 07:48:40,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:48:40,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:48:40,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:48:40,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:48:40,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:48:40,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:48:40,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:48:40,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:48:40,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:48:40,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:48:40,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:48:40,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:48:40,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:48:40,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:48:40,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:48:40,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:48:40,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:48:40,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:48:40,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:48:40,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:48:40,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:48:40,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:48:40,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:48:40,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:48:40,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:48:40,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:48:40,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:48:40,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:48:40,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:48:40,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:48:40,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:48:40,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:48:40,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:48:40,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:48:40,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:48:40,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:48:40,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:48:40,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:48:40,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:48:40,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:48:40,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:48:40,711 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:48:40,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:48:40,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:48:40,713 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:48:40,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:48:40,714 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:48:40,714 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:48:40,715 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:48:40,715 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:48:40,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:48:40,716 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:48:40,716 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:48:40,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:48:40,717 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:48:40,717 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:48:40,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:48:40,718 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:48:40,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:48:40,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:48:40,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:48:40,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:48:40,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:48:40,720 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:48:40,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:48:40,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:48:40,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:48:40,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:48:40,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:48:40,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:40,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:48:40,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:48:40,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:48:40,723 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:48:40,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:48:40,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:48:40,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:48:40,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:48:40,725 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_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca00060f6868fe060def9860574e7b5e9fff4bf1 [2021-10-13 07:48:41,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:48:41,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:48:41,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:48:41,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:48:41,088 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:48:41,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-2.i [2021-10-13 07:48:41,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/data/75b446d68/3fbffa615ced47278cd36861686ca789/FLAG6ac233b8d [2021-10-13 07:48:41,800 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:48:41,801 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/sv-benchmarks/c/signedintegeroverflow-regression/Multiplication-2.i [2021-10-13 07:48:41,815 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/data/75b446d68/3fbffa615ced47278cd36861686ca789/FLAG6ac233b8d [2021-10-13 07:48:42,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/data/75b446d68/3fbffa615ced47278cd36861686ca789 [2021-10-13 07:48:42,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:48:42,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:48:42,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:42,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:48:42,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:48:42,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470969f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42, skipping insertion in model container [2021-10-13 07:48:42,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:48:42,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:48:42,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:42,494 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:48:42,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:42,581 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:48:42,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42 WrapperNode [2021-10-13 07:48:42,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:42,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:42,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:48:42,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:48:42,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:42,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:48:42,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:48:42,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:48:42,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:48:42,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:48:42,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:48:42,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:48:42,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (1/1) ... [2021-10-13 07:48:42,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:42,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:42,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:48:42,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:48:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:48:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:48:42,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:48:42,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:48:43,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:48:43,082 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:48:43,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:43 BoogieIcfgContainer [2021-10-13 07:48:43,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:48:43,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:48:43,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:48:43,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:48:43,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:48:42" (1/3) ... [2021-10-13 07:48:43,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df4589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:43, skipping insertion in model container [2021-10-13 07:48:43,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:42" (2/3) ... [2021-10-13 07:48:43,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df4589c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:43, skipping insertion in model container [2021-10-13 07:48:43,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:43" (3/3) ... [2021-10-13 07:48:43,112 INFO L111 eAbstractionObserver]: Analyzing ICFG Multiplication-2.i [2021-10-13 07:48:43,119 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:48:43,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:48:43,191 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:48:43,199 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, mConcurrency=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 [2021-10-13 07:48:43,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:48:43,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 4 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-10-13 07:48:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-13 07:48:43,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:43,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-13 07:48:43,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:48:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:43,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1212, now seen corresponding path program 1 times [2021-10-13 07:48:43,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:43,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038328626] [2021-10-13 07:48:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:43,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:48:43,366 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:48:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:48:43,403 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:48:43,406 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:48:43,407 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:48:43,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:48:43,417 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:48:43,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:48:43 BoogieIcfgContainer [2021-10-13 07:48:43,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:48:43,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:48:43,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:48:43,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:48:43,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:43" (3/4) ... [2021-10-13 07:48:43,452 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:48:43,487 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:48:43,487 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:48:43,489 INFO L168 Benchmark]: Toolchain (without parser) took 1397.68 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.3 MB in the beginning and 85.6 MB in the end (delta: -28.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:43,490 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:43,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.21 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 62.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:43,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.88 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 61.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:43,492 INFO L168 Benchmark]: Boogie Preprocessor took 27.22 ms. Allocated memory is still 90.2 MB. Free memory was 61.3 MB in the beginning and 60.3 MB in the end (delta: 984.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:43,493 INFO L168 Benchmark]: RCFGBuilder took 449.03 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 51.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:43,494 INFO L168 Benchmark]: TraceAbstraction took 344.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 87.2 MB in the end (delta: -36.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:43,495 INFO L168 Benchmark]: Witness Printer took 38.74 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:43,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 44.9 MB in the beginning and 44.8 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.21 ms. Allocated memory is still 90.2 MB. Free memory was 57.1 MB in the beginning and 62.8 MB in the end (delta: -5.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.88 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 61.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.22 ms. Allocated memory is still 90.2 MB. Free memory was 61.3 MB in the beginning and 60.3 MB in the end (delta: 984.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 449.03 ms. Allocated memory is still 90.2 MB. Free memory was 60.3 MB in the beginning and 51.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 344.05 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.9 MB in the beginning and 87.2 MB in the end (delta: -36.3 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 38.74 ms. Allocated memory is still 109.1 MB. Free memory was 87.1 MB in the beginning and 85.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 332]: integer overflow possible integer overflow possible We found a FailurePath: [L332] 65536 * 32768 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 4 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 226.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 16.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 19.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=4occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.3ms SsaConstructionTime, 28.1ms SatisfiabilityAnalysisTime, 0.0ms 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! [2021-10-13 07:48:43,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4afb647-bf47-42be-8979-40ee9a4cafb1/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...