./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:05:06,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:05:06,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:05:06,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:05:06,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:05:06,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:05:06,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:05:06,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:05:06,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:05:06,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:05:06,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:05:06,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:05:06,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:05:06,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:05:06,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:05:06,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:05:06,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:05:06,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:05:06,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:05:06,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:05:06,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:05:06,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:05:06,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:05:06,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:05:06,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:05:06,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:05:06,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:05:06,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:05:06,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:05:06,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:05:06,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:05:06,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:05:06,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:05:06,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:05:06,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:05:06,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:05:06,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:05:06,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:05:06,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:05:06,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:05:06,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:05:06,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-13 07:05:06,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:05:06,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:05:06,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:05:06,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:05:06,618 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:05:06,618 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:05:06,618 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:05:06,619 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:05:06,619 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:05:06,619 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:05:06,619 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:05:06,619 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:05:06,620 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:05:06,620 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:05:06,620 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:05:06,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:05:06,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:05:06,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:05:06,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:05:06,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:05:06,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:05:06,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:05:06,627 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:05:06,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:05:06,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:05:06,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:05:06,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:05:06,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:05:06,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:05:06,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:05:06,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:05:06,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:05:06,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:05:06,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:05:06,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:05:06,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:05:06,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:05:06,632 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_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf [2021-10-13 07:05:06,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:05:06,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:05:06,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:05:06,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:05:06,946 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:05:06,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-10-13 07:05:07,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/data/0ce6526a5/19b431cf8b1c4b67aa2234fd26f779b6/FLAG64dce6575 [2021-10-13 07:05:07,631 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:05:07,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2021-10-13 07:05:07,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/data/0ce6526a5/19b431cf8b1c4b67aa2234fd26f779b6/FLAG64dce6575 [2021-10-13 07:05:08,013 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/data/0ce6526a5/19b431cf8b1c4b67aa2234fd26f779b6 [2021-10-13 07:05:08,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:05:08,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:05:08,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:05:08,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:05:08,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:05:08,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19767e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08, skipping insertion in model container [2021-10-13 07:05:08,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:05:08,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:05:08,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:05:08,192 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:05:08,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:05:08,222 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:05:08,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08 WrapperNode [2021-10-13 07:05:08,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:05:08,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:05:08,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:05:08,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:05:08,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:05:08,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:05:08,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:05:08,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:05:08,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:05:08,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:05:08,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:05:08,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:05:08,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (1/1) ... [2021-10-13 07:05:08,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:05:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:05:08,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:05:08,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:05:08,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:05:08,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:05:08,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:05:08,543 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 07:05:08,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:05:08 BoogieIcfgContainer [2021-10-13 07:05:08,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:05:08,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:05:08,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:05:08,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:05:08,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:05:08" (1/3) ... [2021-10-13 07:05:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe93cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:05:08, skipping insertion in model container [2021-10-13 07:05:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:05:08" (2/3) ... [2021-10-13 07:05:08,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbe93cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:05:08, skipping insertion in model container [2021-10-13 07:05:08,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:05:08" (3/3) ... [2021-10-13 07:05:08,556 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore_v2.c [2021-10-13 07:05:08,562 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:05:08,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 07:05:08,615 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:05:08,623 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:05:08,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 07:05:08,640 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) [2021-10-13 07:05:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:05:08,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:05:08,647 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:05:08,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:05:08,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:05:08,654 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-10-13 07:05:08,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:05:08,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145455054] [2021-10-13 07:05:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:05:08,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:05:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:05:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:05:08,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:05:08,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145455054] [2021-10-13 07:05:08,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145455054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:05:08,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:05:08,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:05:08,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549845319] [2021-10-13 07:05:08,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:05:08,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:05:08,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:05:08,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:05:08,926 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) [2021-10-13 07:05:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:05:09,047 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 07:05:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:05:09,049 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 [2021-10-13 07:05:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:05:09,058 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:05:09,058 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:05:09,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:05:09,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:05:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:05:09,097 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) [2021-10-13 07:05:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 07:05:09,099 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-10-13 07:05:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:05:09,101 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 07:05:09,102 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) [2021-10-13 07:05:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 07:05:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:05:09,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:05:09,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:05:09,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:05:09,104 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:05:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:05:09,115 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-10-13 07:05:09,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:05:09,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172280096] [2021-10-13 07:05:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:05:09,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:05:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:05:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:05:09,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:05:09,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172280096] [2021-10-13 07:05:09,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172280096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:05:09,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:05:09,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:05:09,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243182988] [2021-10-13 07:05:09,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:05:09,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:05:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:05:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:05:09,187 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) [2021-10-13 07:05:09,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:05:09,207 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 07:05:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:05:09,208 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 [2021-10-13 07:05:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:05:09,209 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:05:09,212 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 07:05:09,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:05:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 07:05:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 07:05:09,216 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) [2021-10-13 07:05:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 07:05:09,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-13 07:05:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:05:09,219 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 07:05:09,219 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) [2021-10-13 07:05:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 07:05:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:05:09,220 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:05:09,220 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-13 07:05:09,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:05:09,221 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-13 07:05:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:05:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2021-10-13 07:05:09,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:05:09,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131960159] [2021-10-13 07:05:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:05:09,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:05:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:05:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:05:09,331 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:05:09,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131960159] [2021-10-13 07:05:09,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131960159] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:05:09,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654482092] [2021-10-13 07:05:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:05:09,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:05:09,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:05:09,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:05:09,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:05:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:05:09,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:05:09,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:05:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:05:09,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:05:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:05:09,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654482092] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 07:05:09,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 07:05:09,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2021-10-13 07:05:09,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214025458] [2021-10-13 07:05:09,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:05:09,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:05:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:05:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:05:09,609 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) [2021-10-13 07:05:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:05:09,626 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 07:05:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:05:09,627 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 [2021-10-13 07:05:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:05:09,628 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:05:09,628 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:05:09,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:05:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:05:09,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:05:09,630 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) [2021-10-13 07:05:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:05:09,630 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-13 07:05:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:05:09,631 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:05:09,631 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) [2021-10-13 07:05:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:05:09,631 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:05:09,634 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:05:09,635 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-13 07:05:09,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:05:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:05:09,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:05:09,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:05:09,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:05:09,920 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 07:05:09,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:05:09,921 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 19) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-13 07:05:09,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2021-10-13 07:05:09,921 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:05:09,922 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-13 07:05:09,922 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-13 07:05:09,922 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 20) no Hoare annotation was computed. [2021-10-13 07:05:09,922 INFO L853 garLoopResultBuilder]: At program point L16-1(lines 16 20) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-13 07:05:09,927 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:05:09,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:05:09 BoogieIcfgContainer [2021-10-13 07:05:09,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:05:09,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:05:09,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:05:09,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:05:09,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:05:08" (3/4) ... [2021-10-13 07:05:09,961 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:05:09,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-13 07:05:09,971 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:05:09,972 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:05:10,031 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:05:10,037 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:05:10,038 INFO L168 Benchmark]: Toolchain (without parser) took 2020.00 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 70.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:05:10,040 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:05:10,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.44 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 75.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:05:10,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.16 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 74.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:05:10,044 INFO L168 Benchmark]: Boogie Preprocessor took 20.38 ms. Allocated memory is still 111.1 MB. Free memory was 74.1 MB in the beginning and 73.4 MB in the end (delta: 747.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:05:10,048 INFO L168 Benchmark]: RCFGBuilder took 264.26 ms. Allocated memory is still 111.1 MB. Free memory was 73.4 MB in the beginning and 64.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:05:10,048 INFO L168 Benchmark]: TraceAbstraction took 1407.62 ms. Allocated memory is still 111.1 MB. Free memory was 64.3 MB in the beginning and 72.9 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:05:10,049 INFO L168 Benchmark]: Witness Printer took 80.27 ms. Allocated memory is still 111.1 MB. Free memory was 72.9 MB in the beginning and 70.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:05:10,052 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 86.0 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 190.44 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 75.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.16 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 74.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.38 ms. Allocated memory is still 111.1 MB. Free memory was 74.1 MB in the beginning and 73.4 MB in the end (delta: 747.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.26 ms. Allocated memory is still 111.1 MB. Free memory was 73.4 MB in the beginning and 64.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1407.62 ms. Allocated memory is still 111.1 MB. Free memory was 64.3 MB in the beginning and 72.9 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.27 ms. Allocated memory is still 111.1 MB. Free memory was 72.9 MB in the beginning and 70.7 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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: 1314.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 12.1ms, AutomataDifference: 209.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 70.8ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 23 SDslu, 1 SDs, 0 SdLazy, 29 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 153.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 36.0ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 28.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.5ms SsaConstructionTime, 57.6ms SatisfiabilityAnalysisTime, 436.8ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 139 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: 16]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (y <= 2147483647 && 0 <= y) && x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-13 07:05:10,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e8cd7c7-a93a-47e6-96e0-63d5faa991f6/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...