./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Et1_true.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Et1_true.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7 --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 12a23acd81bac6be96fab6b12e781f8cdea13b9704294dc24053fce5ee3c8327 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:37:59,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:37:59,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:37:59,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:37:59,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:37:59,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:37:59,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:37:59,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:37:59,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:37:59,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:37:59,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:37:59,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:37:59,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:37:59,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:37:59,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:37:59,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:37:59,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:37:59,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:37:59,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:37:59,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:37:59,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:37:59,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:37:59,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:37:59,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:37:59,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:37:59,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:37:59,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:37:59,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:37:59,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:37:59,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:37:59,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:37:59,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:37:59,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:37:59,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:37:59,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:37:59,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:37:59,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:37:59,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:37:59,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:37:59,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:37:59,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:37:59,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 20:37:59,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:37:59,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:37:59,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:37:59,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:37:59,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:37:59,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:37:59,751 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:37:59,751 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:37:59,751 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:37:59,752 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:37:59,753 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:37:59,753 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:37:59,753 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:37:59,754 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:37:59,754 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:37:59,754 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:37:59,755 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:37:59,755 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:37:59,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:37:59,756 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 20:37:59,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:37:59,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:37:59,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:37:59,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:37:59,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:37:59,758 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 20:37:59,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:37:59,761 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:37:59,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:37:59,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:37:59,762 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:37:59,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:37:59,762 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:37:59,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:37:59,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:37:59,763 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:37:59,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:37:59,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:37:59,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:37:59,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:37:59,765 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_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12a23acd81bac6be96fab6b12e781f8cdea13b9704294dc24053fce5ee3c8327 [2021-11-25 20:38:00,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:38:00,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:38:00,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:38:00,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:38:00,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:38:00,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-numeric/Et1_true.c [2021-11-25 20:38:00,191 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/data/2fab9712f/f61859f10ec3410c9b3120855da7042f/FLAGd11da26a2 [2021-11-25 20:38:00,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:38:00,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/sv-benchmarks/c/termination-numeric/Et1_true.c [2021-11-25 20:38:00,784 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/data/2fab9712f/f61859f10ec3410c9b3120855da7042f/FLAGd11da26a2 [2021-11-25 20:38:01,139 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/data/2fab9712f/f61859f10ec3410c9b3120855da7042f [2021-11-25 20:38:01,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:38:01,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:38:01,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:38:01,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:38:01,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:38:01,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4583a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01, skipping insertion in model container [2021-11-25 20:38:01,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:38:01,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:38:01,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:38:01,441 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:38:01,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:38:01,488 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:38:01,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01 WrapperNode [2021-11-25 20:38:01,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:38:01,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:38:01,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:38:01,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:38:01,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,534 INFO L137 Inliner]: procedures = 6, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-11-25 20:38:01,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:38:01,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:38:01,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:38:01,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:38:01,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:38:01,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:38:01,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:38:01,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:38:01,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (1/1) ... [2021-11-25 20:38:01,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:38:01,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:38:01,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:38:01,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:38:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-25 20:38:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure random [2021-11-25 20:38:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure loop [2021-11-25 20:38:01,685 INFO L138 BoogieDeclarations]: Found implementation of procedure loop [2021-11-25 20:38:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:38:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:38:01,759 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:38:01,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:38:01,932 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:38:01,950 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:38:01,951 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:38:01,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:38:01 BoogieIcfgContainer [2021-11-25 20:38:01,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:38:01,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:38:01,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:38:01,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:38:01,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:38:01" (1/3) ... [2021-11-25 20:38:01,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77664231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:38:01, skipping insertion in model container [2021-11-25 20:38:01,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:38:01" (2/3) ... [2021-11-25 20:38:01,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77664231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:38:01, skipping insertion in model container [2021-11-25 20:38:01,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:38:01" (3/3) ... [2021-11-25 20:38:01,972 INFO L111 eAbstractionObserver]: Analyzing ICFG Et1_true.c [2021-11-25 20:38:01,978 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:38:01,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-25 20:38:02,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:38:02,052 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 [2021-11-25 20:38:02,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-25 20:38:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.6) internal successors, (32), 31 states have internal predecessors, (32), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 20:38:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 20:38:02,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:38:02,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 20:38:02,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, randomErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 20:38:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:38:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 80882662, now seen corresponding path program 1 times [2021-11-25 20:38:02,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:38:02,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279796462] [2021-11-25 20:38:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:38:02,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:38:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:38:02,215 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 20:38:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 20:38:02,245 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 20:38:02,248 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 20:38:02,249 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location randomErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2021-11-25 20:38:02,252 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location randomErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2021-11-25 20:38:02,252 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2021-11-25 20:38:02,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2021-11-25 20:38:02,253 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2021-11-25 20:38:02,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location loopErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2021-11-25 20:38:02,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2021-11-25 20:38:02,254 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2021-11-25 20:38:02,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2021-11-25 20:38:02,255 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2021-11-25 20:38:02,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:38:02,261 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-25 20:38:02,267 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:38:02,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:38:02 BoogieIcfgContainer [2021-11-25 20:38:02,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:38:02,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:38:02,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:38:02,291 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:38:02,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:38:01" (3/4) ... [2021-11-25 20:38:02,295 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-25 20:38:02,351 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:38:02,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:38:02,355 INFO L158 Benchmark]: Toolchain (without parser) took 1210.13ms. Allocated memory is still 115.3MB. Free memory was 82.7MB in the beginning and 64.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,356 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 67.9MB in the beginning and 67.8MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:38:02,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.92ms. Allocated memory is still 115.3MB. Free memory was 82.4MB in the beginning and 91.5MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.19ms. Allocated memory is still 115.3MB. Free memory was 91.5MB in the beginning and 90.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:38:02,359 INFO L158 Benchmark]: Boogie Preprocessor took 36.23ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 89.4MB in the end (delta: 782.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,362 INFO L158 Benchmark]: RCFGBuilder took 381.38ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 79.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,363 INFO L158 Benchmark]: TraceAbstraction took 332.98ms. Allocated memory is still 115.3MB. Free memory was 79.0MB in the beginning and 66.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,364 INFO L158 Benchmark]: Witness Printer took 63.80ms. Allocated memory is still 115.3MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:38:02,374 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory was 67.9MB in the beginning and 67.8MB in the end (delta: 45.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.92ms. Allocated memory is still 115.3MB. Free memory was 82.4MB in the beginning and 91.5MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.19ms. Allocated memory is still 115.3MB. Free memory was 91.5MB in the beginning and 90.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.23ms. Allocated memory is still 115.3MB. Free memory was 90.2MB in the beginning and 89.4MB in the end (delta: 782.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.38ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 79.4MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 332.98ms. Allocated memory is still 115.3MB. Free memory was 79.0MB in the beginning and 66.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 63.80ms. Allocated memory is still 115.3MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). 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: 31]: integer overflow possible integer overflow possible We found a FailurePath: [L21] int x = __VERIFIER_nondet_int(); [L22] int y = __VERIFIER_nondet_int(); [L23] int z = __VERIFIER_nondet_int(); [L24] CALL random() [L29] int x = __VERIFIER_nondet_int(); [L30] COND TRUE x < 0 VAL [x=-2147483648] [L31] -x VAL [x=-2147483648] - UnprovableResult [Line: 31]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 38]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 39]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 24]: 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 3 procedures, 37 locations, 10 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=37occurred 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, 5 NumberOfCodeBlocks, 5 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! [2021-11-25 20:38:02,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62a9fdbd-ee8c-4243-8d20-aab59457fdc7/bin/utaipan-eEHZpOm5b7/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)