./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH --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 e9fdb63b703556c0c4f8ca9f5b469884114c0558f9f1171d980c415152e708f6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:24:45,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:24:45,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:24:45,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:24:45,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:24:45,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:24:45,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:24:45,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:24:45,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:24:45,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:24:45,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:24:45,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:24:45,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:24:45,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:24:45,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:24:45,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:24:45,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:24:45,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:24:45,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:24:45,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:24:45,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:24:45,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:24:45,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:24:45,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:24:45,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:24:45,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:24:45,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:24:45,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:24:45,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:24:45,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:24:45,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:24:45,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:24:45,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:24:45,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:24:45,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:24:45,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:24:45,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:24:45,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:24:45,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:24:45,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:24:45,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:24:45,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 05:24:45,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:24:45,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:24:45,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:24:45,456 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:24:45,457 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:24:45,457 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:24:45,457 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:24:45,457 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:24:45,458 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:24:45,458 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:24:45,458 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:24:45,458 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:24:45,458 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:24:45,459 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:24:45,459 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:24:45,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:24:45,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:24:45,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:24:45,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:24:45,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:24:45,461 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:24:45,461 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:24:45,461 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 05:24:45,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:24:45,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:24:45,462 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:24:45,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:24:45,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:24:45,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:24:45,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:24:45,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:24:45,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:24:45,463 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:24:45,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:24:45,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:24:45,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:24:45,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:24:45,464 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_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9fdb63b703556c0c4f8ca9f5b469884114c0558f9f1171d980c415152e708f6 [2021-11-03 05:24:45,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:24:45,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:24:45,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:24:45,732 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:24:45,732 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:24:45,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted/Bangalore-2.c [2021-11-03 05:24:45,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/data/81d3e7a61/3e51a2c3ee4f473788b24b8b8e2fb82f/FLAGc7114f4e4 [2021-11-03 05:24:46,324 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:24:46,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/sv-benchmarks/c/termination-crafted/Bangalore-2.c [2021-11-03 05:24:46,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/data/81d3e7a61/3e51a2c3ee4f473788b24b8b8e2fb82f/FLAGc7114f4e4 [2021-11-03 05:24:46,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/data/81d3e7a61/3e51a2c3ee4f473788b24b8b8e2fb82f [2021-11-03 05:24:46,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:24:46,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:24:46,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:24:46,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:24:46,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:24:46,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:46,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14814702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46, skipping insertion in model container [2021-11-03 05:24:46,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:46,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:24:46,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:24:46,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:24:46,939 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:24:46,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:24:46,970 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:24:46,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46 WrapperNode [2021-11-03 05:24:46,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:24:46,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:24:46,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:24:46,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:24:46,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:46,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:24:47,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:24:47,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:24:47,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:24:47,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:24:47,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:24:47,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:24:47,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:24:47,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (1/1) ... [2021-11-03 05:24:47,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:24:47,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:24:47,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:24:47,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:24:47,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:24:47,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:24:47,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:24:47,315 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-03 05:24:47,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:24:47 BoogieIcfgContainer [2021-11-03 05:24:47,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:24:47,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:24:47,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:24:47,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:24:47,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:24:46" (1/3) ... [2021-11-03 05:24:47,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369bcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:24:47, skipping insertion in model container [2021-11-03 05:24:47,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:24:46" (2/3) ... [2021-11-03 05:24:47,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2369bcf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:24:47, skipping insertion in model container [2021-11-03 05:24:47,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:24:47" (3/3) ... [2021-11-03 05:24:47,338 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore-2.c [2021-11-03 05:24:47,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:24:47,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-03 05:24:47,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:24:47,412 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 [2021-11-03 05:24:47,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-03 05:24:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-03 05:24:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 05:24:47,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:47,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 05:24:47,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-03 05:24:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-11-03 05:24:47,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:47,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622319916] [2021-11-03 05:24:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:47,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:47,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:47,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622319916] [2021-11-03 05:24:47,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622319916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:47,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:47,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:24:47,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768980093] [2021-11-03 05:24:47,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:24:47,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:24:47,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:24:47,674 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 8 states have internal predecessors, (10), 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-03 05:24:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:47,788 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-03 05:24:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:24:47,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-11-03 05:24:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:47,798 INFO L225 Difference]: With dead ends: 20 [2021-11-03 05:24:47,798 INFO L226 Difference]: Without dead ends: 15 [2021-11-03 05:24:47,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:24:47,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-03 05:24:47,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 9. [2021-11-03 05:24:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-11-03 05:24:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-03 05:24:47,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-11-03 05:24:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:47,830 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-03 05:24:47,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-03 05:24:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-03 05:24:47,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:24:47,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:47,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:24:47,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:24:47,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-03 05:24:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-11-03 05:24:47,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:47,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762379535] [2021-11-03 05:24:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:47,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:47,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:47,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762379535] [2021-11-03 05:24:47,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762379535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:47,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:47,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 05:24:47,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463193700] [2021-11-03 05:24:47,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:24:47,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:47,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:24:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:24:47,872 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-03 05:24:47,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:47,890 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-11-03 05:24:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:24:47,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2021-11-03 05:24:47,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:47,906 INFO L225 Difference]: With dead ends: 9 [2021-11-03 05:24:47,906 INFO L226 Difference]: Without dead ends: 8 [2021-11-03 05:24:47,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:24:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-03 05:24:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-03 05:24:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-03 05:24:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-03 05:24:47,910 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-11-03 05:24:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:47,911 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-03 05:24:47,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-03 05:24:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-03 05:24:47,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 05:24:47,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:47,912 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-03 05:24:47,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:24:47,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-03 05:24:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2021-11-03 05:24:47,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:47,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465537354] [2021-11-03 05:24:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:47,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:47,973 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:47,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465537354] [2021-11-03 05:24:47,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465537354] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 05:24:47,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262603777] [2021-11-03 05:24:47,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:47,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:24:47,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:24:47,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:24:47,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 05:24:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:48,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:24:48,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:24:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:48,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:24:48,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:48,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262603777] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-03 05:24:48,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:24:48,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2021-11-03 05:24:48,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334709024] [2021-11-03 05:24:48,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:24:48,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:24:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:24:48,228 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 05:24:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:48,250 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-11-03 05:24:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:24:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-11-03 05:24:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:48,252 INFO L225 Difference]: With dead ends: 9 [2021-11-03 05:24:48,252 INFO L226 Difference]: Without dead ends: 0 [2021-11-03 05:24:48,253 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:24:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-03 05:24:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-03 05:24:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-03 05:24:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-03 05:24:48,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-03 05:24:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:48,255 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-03 05:24:48,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-03 05:24:48,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-03 05:24:48,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-03 05:24:48,259 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:24:48,259 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 05:24:48,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:24:48,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:24:48,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-03 05:24:48,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:24:48,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 05:24:48,537 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-11-03 05:24:48,538 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-03 05:24:48,539 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-11-03 05:24:48,539 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-11-03 05:24:48,540 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-03 05:24:48,540 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-11-03 05:24:48,540 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-11-03 05:24:48,541 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-11-03 05:24:48,541 INFO L853 garLoopResultBuilder]: At program point L18-1(lines 18 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-11-03 05:24:48,544 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 05:24:48,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 05:24:48,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 05:24:48 BoogieIcfgContainer [2021-11-03 05:24:48,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 05:24:48,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 05:24:48,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 05:24:48,565 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 05:24:48,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:24:47" (3/4) ... [2021-11-03 05:24:48,568 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-03 05:24:48,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-03 05:24:48,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-03 05:24:48,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-03 05:24:48,608 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 05:24:48,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 05:24:48,610 INFO L168 Benchmark]: Toolchain (without parser) took 1858.31 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 79.4 MB in the beginning and 99.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,611 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:24:48,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.76 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 87.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.63 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:24:48,613 INFO L168 Benchmark]: Boogie Preprocessor took 20.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.5 MB in the end (delta: 880.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,613 INFO L168 Benchmark]: RCFGBuilder took 294.56 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 77.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,614 INFO L168 Benchmark]: TraceAbstraction took 1244.30 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 76.7 MB in the beginning and 101.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,615 INFO L168 Benchmark]: Witness Printer took 44.62 ms. Allocated memory is still 142.6 MB. Free memory was 101.9 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 05:24:48,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 111.1 MB. Free memory is still 66.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.76 ms. Allocated memory is still 111.1 MB. Free memory was 79.1 MB in the beginning and 87.6 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.63 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.5 MB in the end (delta: 880.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 294.56 ms. Allocated memory is still 111.1 MB. Free memory was 85.5 MB in the beginning and 77.1 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1244.30 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 76.7 MB in the beginning and 101.9 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Witness Printer took 44.62 ms. Allocated memory is still 142.6 MB. Free memory was 101.9 MB in the beginning and 99.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 24 SDslu, 1 SDs, 0 SdLazy, 36 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 145 SizeOfPredicates, 1 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (y <= 2147483647 && 1 <= y) && x <= 2147483647 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-11-03 05:24:48,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8cb1aa-85f6-4fef-b2be-8a9f12b41e0d/bin/utaipan-aC7eJsxGYH/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 Result: TRUE