./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/genady.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/genady.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI --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 6938b5c805400363799492c040263d9022406929 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:14,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:14,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:14,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:14,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:14,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:14,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:14,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:14,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:14,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:14,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:14,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:14,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:14,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:14,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:14,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:14,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:14,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:14,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:14,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:14,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:14,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:14,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:14,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:14,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:14,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:14,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:14,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:14,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:14,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:14,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:14,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:14,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:14,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:14,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:14,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:14,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:14,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:14,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:14,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:14,563 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:14,566 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-11 02:23:14,613 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:14,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:14,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:14,615 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:14,615 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:14,616 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:14,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:14,616 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:14,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:14,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:14,623 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:14,624 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:14,624 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:14,624 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:14,624 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:14,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:14,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:23:14,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:23:14,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:14,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:14,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:14,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:14,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:14,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:14,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:14,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:14,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:14,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:14,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:14,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:14,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:14,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:14,629 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_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6938b5c805400363799492c040263d9022406929 [2021-10-11 02:23:14,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:14,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:14,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:14,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:14,962 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:14,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/termination-crafted-lit/genady.c [2021-10-11 02:23:15,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/data/863d8b8b6/43e21b0aebde4031b11d08373787121c/FLAG0b6174fc6 [2021-10-11 02:23:15,546 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:15,547 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/sv-benchmarks/c/termination-crafted-lit/genady.c [2021-10-11 02:23:15,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/data/863d8b8b6/43e21b0aebde4031b11d08373787121c/FLAG0b6174fc6 [2021-10-11 02:23:15,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/data/863d8b8b6/43e21b0aebde4031b11d08373787121c [2021-10-11 02:23:15,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:15,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:15,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:15,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:15,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:15,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630d61ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:15, skipping insertion in model container [2021-10-11 02:23:15,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:15" (1/1) ... [2021-10-11 02:23:15,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:15,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:16,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:16,088 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:16,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:16,141 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:16,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16 WrapperNode [2021-10-11 02:23:16,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:16,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:16,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:16,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:16,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:16,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:16,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:16,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:16,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... [2021-10-11 02:23:16,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:16,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:16,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:16,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:16,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:16,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:16,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:16,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:16,535 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:23:16,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:16 BoogieIcfgContainer [2021-10-11 02:23:16,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:16,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:16,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:16,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:16,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:15" (1/3) ... [2021-10-11 02:23:16,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c5dce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:16, skipping insertion in model container [2021-10-11 02:23:16,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:16" (2/3) ... [2021-10-11 02:23:16,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c5dce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:16, skipping insertion in model container [2021-10-11 02:23:16,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:16" (3/3) ... [2021-10-11 02:23:16,546 INFO L111 eAbstractionObserver]: Analyzing ICFG genady.c [2021-10-11 02:23:16,560 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:16,563 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:23:16,573 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:23:16,597 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:16,597 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:16,598 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:16,598 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:16,598 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:16,598 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:16,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:16,599 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:23:16,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-11 02:23:16,620 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:16,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2021-10-11 02:23:16,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:16,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:16,628 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2021-10-11 02:23:16,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:16,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713145475] [2021-10-11 02:23:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:16,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713145475] [2021-10-11 02:23:16,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:16,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:16,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381158686] [2021-10-11 02:23:16,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:16,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:16,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:16,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:16,811 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2021-10-11 02:23:16,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:16,902 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-11 02:23:16,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:16,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2021-10-11 02:23:16,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:16,911 INFO L225 Difference]: With dead ends: 18 [2021-10-11 02:23:16,911 INFO L226 Difference]: Without dead ends: 13 [2021-10-11 02:23:16,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-11 02:23:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-11 02:23:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:23:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-11 02:23:16,975 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 2 [2021-10-11 02:23:16,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:16,976 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-11 02:23:16,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-11 02:23:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:23:16,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:16,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:23:16,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:16,977 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:16,978 INFO L82 PathProgramCache]: Analyzing trace with hash 30977, now seen corresponding path program 1 times [2021-10-11 02:23:16,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:16,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638338729] [2021-10-11 02:23:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:16,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638338729] [2021-10-11 02:23:16,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:16,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:16,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285867142] [2021-10-11 02:23:17,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,002 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2021-10-11 02:23:17,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,055 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-11 02:23:17,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2021-10-11 02:23:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,057 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:23:17,057 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:23:17,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:23:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2021-10-11 02:23:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:23:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 02:23:17,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2021-10-11 02:23:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,063 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 02:23:17,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 02:23:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:17,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:23:17,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:17,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:17,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,065 INFO L82 PathProgramCache]: Analyzing trace with hash 29770307, now seen corresponding path program 1 times [2021-10-11 02:23:17,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891343295] [2021-10-11 02:23:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891343295] [2021-10-11 02:23:17,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:17,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908708169] [2021-10-11 02:23:17,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,117 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2021-10-11 02:23:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,158 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-11 02:23:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:23:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,161 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:23:17,172 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:23:17,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:23:17,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-11 02:23:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:23:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 02:23:17,176 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2021-10-11 02:23:17,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,177 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 02:23:17,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 02:23:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:23:17,177 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:17,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:17,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,179 INFO L82 PathProgramCache]: Analyzing trace with hash 922879565, now seen corresponding path program 1 times [2021-10-11 02:23:17,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365474708] [2021-10-11 02:23:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365474708] [2021-10-11 02:23:17,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:17,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200932778] [2021-10-11 02:23:17,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,222 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2021-10-11 02:23:17,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,243 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-11 02:23:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,243 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:23:17,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,244 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:23:17,244 INFO L226 Difference]: Without dead ends: 16 [2021-10-11 02:23:17,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-11 02:23:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-11 02:23:17,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:23:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:23:17,249 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2021-10-11 02:23:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,249 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:23:17,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:23:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:23:17,250 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:17,250 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1455504507, now seen corresponding path program 1 times [2021-10-11 02:23:17,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392675974] [2021-10-11 02:23:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392675974] [2021-10-11 02:23:17,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:17,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518303568] [2021-10-11 02:23:17,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,275 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2021-10-11 02:23:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,289 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 02:23:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,290 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:23:17,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,290 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:23:17,290 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:23:17,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:23:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:23:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:23:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 02:23:17,294 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-10-11 02:23:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,295 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 02:23:17,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 02:23:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:23:17,295 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:17,296 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2124000591, now seen corresponding path program 1 times [2021-10-11 02:23:17,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747965945] [2021-10-11 02:23:17,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747965945] [2021-10-11 02:23:17,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:17,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-11 02:23:17,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547210016] [2021-10-11 02:23:17,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:17,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:17,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:17,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,322 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2021-10-11 02:23:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:17,344 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-11 02:23:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:17,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:23:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:17,345 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:23:17,345 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:23:17,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:23:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-11 02:23:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-11 02:23:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-11 02:23:17,350 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2021-10-11 02:23:17,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:17,350 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-11 02:23:17,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-11 02:23:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:23:17,351 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:17,351 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:17,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:17,352 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:17,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1055103537, now seen corresponding path program 1 times [2021-10-11 02:23:17,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:17,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748031166] [2021-10-11 02:23:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748031166] [2021-10-11 02:23:17,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99461087] [2021-10-11 02:23:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:17,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:23:17,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:17,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:17,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [907443972] [2021-10-11 02:23:17,648 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:23:17,648 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:17,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:17,658 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:17,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:17,920 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:18,230 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:18,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:18,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2021-10-11 02:23:18,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538579357] [2021-10-11 02:23:18,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:23:18,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:18,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:23:18,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:23:18,233 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 11 states. [2021-10-11 02:23:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:18,387 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-11 02:23:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:23:18,388 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2021-10-11 02:23:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:18,389 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:23:18,390 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:23:18,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:23:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:23:18,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2021-10-11 02:23:18,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-10-11 02:23:18,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-10-11 02:23:18,401 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 10 [2021-10-11 02:23:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:18,402 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-10-11 02:23:18,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:23:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-10-11 02:23:18,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:23:18,404 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:18,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2021-10-11 02:23:18,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 02:23:18,618 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:23:18,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:18,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1217672673, now seen corresponding path program 1 times [2021-10-11 02:23:18,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:18,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122521366] [2021-10-11 02:23:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:18,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122521366] [2021-10-11 02:23:18,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945834130] [2021-10-11 02:23:18,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:18,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:18,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:18,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335893355] [2021-10-11 02:23:18,785 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:23:18,785 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:18,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:18,786 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:18,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:18,929 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:19,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:19,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [2, 2, 2] total 9 [2021-10-11 02:23:19,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689905128] [2021-10-11 02:23:19,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:23:19,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:19,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:23:19,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:23:19,162 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2021-10-11 02:23:19,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:19,258 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-11 02:23:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:23:19,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-10-11 02:23:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:19,259 INFO L225 Difference]: With dead ends: 21 [2021-10-11 02:23:19,259 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:19,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:23:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:19,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:23:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:19,260 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:19,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:23:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:19,261 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:19,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:23:19,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:19,546 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-11 02:23:19,546 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-11 02:23:19,547 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:23:19,548 INFO L258 CegarLoopResult]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 1)) (or (and (<= 1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~0 10000) (<= ULTIMATE.start_main_~j~0 1) (<= 10000 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~i~0 9999) (<= 2 ULTIMATE.start_main_~j~0)))) [2021-10-11 02:23:19,548 INFO L258 CegarLoopResult]: At program point L15-5(lines 15 18) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 (+ ULTIMATE.start_main_~j~0 9999)) [2021-10-11 02:23:19,548 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-11 02:23:19,548 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-11 02:23:19,549 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:19,549 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2021-10-11 02:23:19,549 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:23:19,549 INFO L262 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2021-10-11 02:23:19,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:19 BoogieIcfgContainer [2021-10-11 02:23:19,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:19,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:19,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:19,567 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:19,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:16" (3/4) ... [2021-10-11 02:23:19,570 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:19,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:23:19,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:19,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:19,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0eb6dc3e-69a8-4ec6-aafa-bcd5a0b02f81/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:19,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:19,612 INFO L168 Benchmark]: Toolchain (without parser) took 3697.71 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 64.8 MB in the beginning and 98.0 MB in the end (delta: -33.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:19,612 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 59.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:19,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.06 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 78.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:19,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 76.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:19,614 INFO L168 Benchmark]: Boogie Preprocessor took 25.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.9 MB in the end (delta: 978.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:19,615 INFO L168 Benchmark]: RCFGBuilder took 331.25 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 65.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:19,615 INFO L168 Benchmark]: TraceAbstraction took 3026.72 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 65.5 MB in the beginning and 100.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:19,616 INFO L168 Benchmark]: Witness Printer took 44.09 ms. Allocated memory is still 130.0 MB. Free memory was 100.1 MB in the beginning and 98.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:19,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 100.7 MB. Free memory was 80.8 MB in the beginning and 80.7 MB in the end (delta: 59.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.06 ms. Allocated memory is still 100.7 MB. Free memory was 64.6 MB in the beginning and 78.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.62 ms. Allocated memory is still 100.7 MB. Free memory was 78.0 MB in the beginning and 76.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.02 ms. Allocated memory is still 100.7 MB. Free memory was 76.9 MB in the beginning and 75.9 MB in the end (delta: 978.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 331.25 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 65.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3026.72 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 65.5 MB in the beginning and 100.1 MB in the end (delta: -34.7 MB). Peak memory consumption was 48.7 MB. Max. memory is 16.1 GB. * Witness Printer took 44.09 ms. Allocated memory is still 130.0 MB. Free memory was 100.1 MB in the beginning and 98.0 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: - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: i <= j + 9999 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: j <= i + 1 && ((((1 <= j && i <= 10000) && j <= 1) && 10000 <= i) || (i <= 9999 && 2 <= j)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 32 SDtfs, 64 SDslu, 7 SDs, 0 SdLazy, 163 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=7, 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, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 32 HoareAnnotationTreeSize, 2 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 3936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 0/27 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: OVERALL_TIME[ms]: 145, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 30, TOOLS_POST_TIME[ms]: 47, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME[ms]: 36, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 9, FLUID_QUERY_TIME[ms]: 1, FLUID_QUERIES: 47, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME[ms]: 12, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 52, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 16, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 100, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 100, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 0, REGEX_TO_DAG_TIME[ms]: 1, DAG_COMPRESSION_TIME[ms]: 3, DAG_COMPRESSION_PROCESSED_NODES: 76, DAG_COMPRESSION_RETAINED_NODES: 31, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...