./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/signedintegeroverflow-regression/Division-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/signedintegeroverflow-regression/Division-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 748995aedc1ba148a88b769ef59d17a0b3bfd64d0758afd86740be0cd4b87150 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:59:52,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:59:52,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:59:52,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:59:52,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:59:52,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:59:52,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:59:52,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:59:52,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:59:52,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:59:52,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:59:52,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:59:52,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:59:52,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:59:52,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:59:52,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:59:52,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:59:52,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:59:52,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:59:52,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:59:52,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:59:52,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:59:52,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:59:52,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:59:52,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:59:52,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:59:52,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:59:52,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:59:52,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:59:52,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:59:52,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:59:52,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:59:52,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:59:52,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:59:52,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:59:52,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:59:52,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:59:52,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:59:52,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:59:52,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:59:52,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:59:52,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-23 13:59:52,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:59:52,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:59:52,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:59:52,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:59:52,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:59:52,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:59:52,744 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:59:52,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:59:52,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:59:52,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:59:52,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:59:52,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:59:52,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:59:52,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:59:52,746 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 13:59:52,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:59:52,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:59:52,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:59:52,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:59:52,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:59:52,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:59:52,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:52,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:59:52,748 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:59:52,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:59:52,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:59:52,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:59:52,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:59:52,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:59:52,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 748995aedc1ba148a88b769ef59d17a0b3bfd64d0758afd86740be0cd4b87150 [2021-11-23 13:59:53,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:59:53,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:59:53,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:59:53,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:59:53,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:59:53,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/signedintegeroverflow-regression/Division-1.i [2021-11-23 13:59:53,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/data/8606ab7ac/7bfe1e7f7b6245a391da8abf3d966ba0/FLAG480baa339 [2021-11-23 13:59:53,660 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:59:53,661 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/sv-benchmarks/c/signedintegeroverflow-regression/Division-1.i [2021-11-23 13:59:53,672 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/data/8606ab7ac/7bfe1e7f7b6245a391da8abf3d966ba0/FLAG480baa339 [2021-11-23 13:59:53,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/data/8606ab7ac/7bfe1e7f7b6245a391da8abf3d966ba0 [2021-11-23 13:59:54,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:59:54,004 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:59:54,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:54,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:59:54,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:59:54,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:53" (1/1) ... [2021-11-23 13:59:54,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3016dfb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54, skipping insertion in model container [2021-11-23 13:59:54,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:59:53" (1/1) ... [2021-11-23 13:59:54,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:59:54,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:59:54,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:54,344 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:59:54,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:59:54,453 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:59:54,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54 WrapperNode [2021-11-23 13:59:54,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:59:54,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:54,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:59:54,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:59:54,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,510 INFO L137 Inliner]: procedures = 109, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-11-23 13:59:54,511 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:59:54,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:59:54,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:59:54,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:59:54,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:59:54,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:59:54,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:59:54,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:59:54,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (1/1) ... [2021-11-23 13:59:54,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:59:54,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:59:54,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:59:54,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:59:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:59:54,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:59:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:59:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:59:54,749 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:59:54,751 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:59:54,826 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:59:54,831 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:59:54,832 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:59:54,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:54 BoogieIcfgContainer [2021-11-23 13:59:54,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:59:54,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:59:54,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:59:54,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:59:54,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:59:53" (1/3) ... [2021-11-23 13:59:54,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7606ecbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:54, skipping insertion in model container [2021-11-23 13:59:54,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:59:54" (2/3) ... [2021-11-23 13:59:54,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7606ecbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:59:54, skipping insertion in model container [2021-11-23 13:59:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:54" (3/3) ... [2021-11-23 13:59:54,864 INFO L111 eAbstractionObserver]: Analyzing ICFG Division-1.i [2021-11-23 13:59:54,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:59:54,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 13:59:54,952 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:59:54,973 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 [2021-11-23 13:59:54,973 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 13:59:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-11-23 13:59:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-23 13:59:55,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:59:55,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-23 13:59:55,018 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-23 13:59:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:59:55,036 INFO L85 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2021-11-23 13:59:55,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:59:55,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482197562] [2021-11-23 13:59:55,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:59:55,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:59:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:59:55,140 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:59:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:59:55,178 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:59:55,180 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:59:55,181 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-11-23 13:59:55,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-11-23 13:59:55,184 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-11-23 13:59:55,186 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-11-23 13:59:55,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:59:55,192 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 13:59:55,197 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:59:55,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:59:55 BoogieIcfgContainer [2021-11-23 13:59:55,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:59:55,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:59:55,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:59:55,221 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:59:55,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:59:54" (3/4) ... [2021-11-23 13:59:55,224 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 13:59:55,263 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:59:55,263 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:59:55,270 INFO L158 Benchmark]: Toolchain (without parser) took 1260.48ms. Allocated memory is still 102.8MB. Free memory was 63.6MB in the beginning and 48.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,272 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:59:55,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.71ms. Allocated memory is still 102.8MB. Free memory was 63.4MB in the beginning and 73.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.90ms. Allocated memory is still 102.8MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,275 INFO L158 Benchmark]: Boogie Preprocessor took 42.07ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 71.3MB in the end (delta: 813.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,278 INFO L158 Benchmark]: RCFGBuilder took 278.85ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 62.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,279 INFO L158 Benchmark]: TraceAbstraction took 381.69ms. Allocated memory is still 102.8MB. Free memory was 61.7MB in the beginning and 49.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,279 INFO L158 Benchmark]: Witness Printer took 42.66ms. Allocated memory is still 102.8MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:59:55,286 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory was 80.6MB in the beginning and 80.5MB in the end (delta: 49.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.71ms. Allocated memory is still 102.8MB. Free memory was 63.4MB in the beginning and 73.9MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.90ms. Allocated memory is still 102.8MB. Free memory was 73.9MB in the beginning and 72.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.07ms. Allocated memory is still 102.8MB. Free memory was 72.1MB in the beginning and 71.3MB in the end (delta: 813.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 278.85ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 62.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 381.69ms. Allocated memory is still 102.8MB. Free memory was 61.7MB in the beginning and 49.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 42.66ms. Allocated memory is still 102.8MB. Free memory was 49.7MB in the beginning and 48.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 333]: integer overflow possible integer overflow possible We found a FailurePath: [L332] int minInt = -2147483647 - 1; VAL [minInt=-2147483648] [L333] minInt / -1 VAL [minInt=-2147483648] - UnprovableResult [Line: 333]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 333]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 333]: 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, 13 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 13:59:55,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2416fd03-5aa9-4f78-8685-87dfa41e0e4f/bin/uautomizer-wIGwrQj20G/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)