./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark12_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark12_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V --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 32bit --witnessprinter.graph.data.programhash b17ee119bef1fd8cd5134a7af55c483345112c89dff1a376575e65f669f9d0d6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:10:49,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:10:49,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:10:49,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:10:49,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:10:49,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:10:49,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:10:49,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:10:49,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:10:49,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:10:49,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:10:49,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:10:49,705 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:10:49,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:10:49,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:10:49,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:10:49,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:10:49,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:10:49,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:10:49,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:10:49,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:10:49,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:10:49,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:10:49,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:10:49,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:10:49,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:10:49,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:10:49,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:10:49,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:10:49,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:10:49,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:10:49,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:10:49,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:10:49,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:10:49,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:10:49,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:10:49,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:10:49,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:10:49,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:10:49,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:10:49,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:10:49,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-23 02:10:49,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:10:49,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:10:49,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:10:49,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:10:49,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:10:49,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:10:49,772 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:10:49,773 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:10:49,773 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:10:49,773 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:10:49,773 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:10:49,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:10:49,774 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:10:49,774 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:10:49,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:10:49,775 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:10:49,775 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:10:49,775 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:10:49,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:10:49,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:10:49,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:10:49,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:10:49,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:10:49,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:10:49,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:10:49,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:10:49,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:10:49,778 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-23 02:10:49,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:10:49,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:10:49,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:10:49,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:10:49,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:10:49,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:10:49,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:10:49,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:10:49,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:10:49,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:10:49,781 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:10:49,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:10:49,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:10:49,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:10:49,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:10:49,783 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_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b17ee119bef1fd8cd5134a7af55c483345112c89dff1a376575e65f669f9d0d6 [2021-11-23 02:10:50,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:10:50,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:10:50,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:10:50,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:10:50,091 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:10:50,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/loop-zilu/benchmark12_linear.i [2021-11-23 02:10:50,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/data/0106f14b8/c5a52ac530b246d1afc0f345deeae9e2/FLAGa8bdfcac5 [2021-11-23 02:10:50,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:10:50,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/sv-benchmarks/c/loop-zilu/benchmark12_linear.i [2021-11-23 02:10:50,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/data/0106f14b8/c5a52ac530b246d1afc0f345deeae9e2/FLAGa8bdfcac5 [2021-11-23 02:10:51,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/data/0106f14b8/c5a52ac530b246d1afc0f345deeae9e2 [2021-11-23 02:10:51,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:10:51,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:10:51,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:10:51,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:10:51,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:10:51,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f42c407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51, skipping insertion in model container [2021-11-23 02:10:51,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:10:51,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:10:51,554 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/sv-benchmarks/c/loop-zilu/benchmark12_linear.i[868,881] [2021-11-23 02:10:51,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:10:51,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:10:51,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/sv-benchmarks/c/loop-zilu/benchmark12_linear.i[868,881] [2021-11-23 02:10:51,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:10:51,604 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:10:51,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51 WrapperNode [2021-11-23 02:10:51,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:10:51,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:10:51,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:10:51,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:10:51,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,641 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2021-11-23 02:10:51,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:10:51,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:10:51,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:10:51,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:10:51,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:10:51,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:10:51,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:10:51,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:10:51,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (1/1) ... [2021-11-23 02:10:51,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:10:51,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:51,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:10:51,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:10:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:10:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:10:51,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:10:51,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:10:51,833 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:10:51,835 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:10:51,960 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:10:51,987 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:10:51,987 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:10:51,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:51 BoogieIcfgContainer [2021-11-23 02:10:51,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:10:51,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:10:51,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:10:51,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:10:51,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:10:51" (1/3) ... [2021-11-23 02:10:51,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4098b99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:51, skipping insertion in model container [2021-11-23 02:10:51,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:10:51" (2/3) ... [2021-11-23 02:10:51,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4098b99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:51, skipping insertion in model container [2021-11-23 02:10:52,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:51" (3/3) ... [2021-11-23 02:10:52,001 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark12_linear.i [2021-11-23 02:10:52,008 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:10:52,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 02:10:52,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:10:52,079 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 02:10:52,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 02:10:52,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 9 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 02:10:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:10:52,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:52,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:10:52,105 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-23 02:10:52,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash 66718034, now seen corresponding path program 1 times [2021-11-23 02:10:52,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:10:52,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376715149] [2021-11-23 02:10:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:52,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:10:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:10:52,273 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:10:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:10:52,342 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:10:52,345 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:10:52,347 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-11-23 02:10:52,350 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-11-23 02:10:52,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:10:52,357 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:10:52,362 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:10:52,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:10:52 BoogieIcfgContainer [2021-11-23 02:10:52,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:10:52,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:10:52,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:10:52,396 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:10:52,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:51" (3/4) ... [2021-11-23 02:10:52,399 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:10:52,462 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:10:52,462 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:10:52,465 INFO L158 Benchmark]: Toolchain (without parser) took 1189.43ms. Allocated memory is still 130.0MB. Free memory was 101.5MB in the beginning and 76.0MB in the end (delta: 25.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,465 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:10:52,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.32ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 102.9MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 130.0MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,473 INFO L158 Benchmark]: Boogie Preprocessor took 21.78ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 100.5MB in the end (delta: 913.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:10:52,474 INFO L158 Benchmark]: RCFGBuilder took 325.49ms. Allocated memory is still 130.0MB. Free memory was 100.5MB in the beginning and 90.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,475 INFO L158 Benchmark]: TraceAbstraction took 398.77ms. Allocated memory is still 130.0MB. Free memory was 90.2MB in the beginning and 77.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,476 INFO L158 Benchmark]: Witness Printer took 66.88ms. Allocated memory is still 130.0MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:10:52,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.32ms. Allocated memory is still 130.0MB. Free memory was 101.3MB in the beginning and 102.9MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 130.0MB. Free memory was 102.9MB in the beginning and 101.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.78ms. Allocated memory is still 130.0MB. Free memory was 101.4MB in the beginning and 100.5MB in the end (delta: 913.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 325.49ms. Allocated memory is still 130.0MB. Free memory was 100.5MB in the beginning and 90.7MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 398.77ms. Allocated memory is still 130.0MB. Free memory was 90.2MB in the beginning and 77.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 66.88ms. Allocated memory is still 130.0MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). 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: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] int t = __VERIFIER_nondet_int(); [L23] COND FALSE !(!(x!=y && y==t)) VAL [t=1, x=2147483647, y=1] [L24] COND TRUE __VERIFIER_nondet_bool() [L25] COND TRUE x>0 VAL [t=1, x=2147483647, y=1] [L25] y+x VAL [t=1, x=2147483647, y=1] - UnprovableResult [Line: 25]: 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, 10 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 0.1s 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! [2021-11-23 02:10:52,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff199cec-d36c-4c90-8703-13aaddb62cbb/bin/utaipan-EQgc7hIp5V/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)